The force the pitcher exerts on the ball during this record-setting pitch is 160.15 N. The force exerted on the baseball as a fraction of the pitcher's weight is 0.195.
What is a force?Concepts related to force include thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in the rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is internal mechanical stress.
The given parameters;
the initial velocity of the baseball, u = 47 m/s
distance traveled by the ball, d = 1 m
mass of the baseball, m = 145 g = 0.145 kg
The free-body diagram of the ball during the pitch is in the image added.
The acceleration of the baseball over the given distance is calculated as;
v² = u² - 2as
when the ball stops, the final velocity, v = 0
0 = u² - 2as
2as = u²
a= u²/2s
a = 1140.5 m/s²
The force the pitcher exerts on the ball during this record-setting pitch is calculated as;
F = ma
F = 0.145 x 1,104.5
F = 160.15 N.
The weight of the pitcher is calculated as;
W = mg
W = 84 x 9.8
W = 823.2 N
The force exerted on the baseball as a fraction of the pitcher's weight is calculated as follows;
n = 160.15/823.2 = 0.195
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on what planet were rock formations that looked like bears recently discovered?
On Mars planet were rock formations that looked like bears recently discovered. NASA astronomers have found a bizarre rock formation on the surface of the red planet, resembling a bear's face.
NASA (National Aeronautics and Space Administration) is a United States government agency that is responsible for the country's civilian space program and for research in space exploration, aeronautics, and science. NASA was established in 1958 in response to the Soviet Union's launch of the first artificial satellite, Sputnik. The agency's mission is to explore space, conduct research, and develop new technologies that benefit society.
NASA has achieved many significant accomplishments in space exploration, including sending the first humans to the moon and launching numerous spacecraft to explore the planets and other celestial bodies in our solar system. The agency also operates the International Space Station, a collaborative effort with other countries to conduct research and study the effects of long-term space travel on the human body.
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The population of country x is 250,000, and the labor force is 200,000 persons. If 175,000 people are employed, what is the unemployment rate?.
To find the unemployment rate, we first need to determine the number of unemployed individuals in Country X. We can do this by subtracting the number of employed individuals from the labor force:
How to find unemployment rate ?Employment = Workforce - Working200,000 - 175,000 people are unemployed.
25,000 unemployed people
Thus, Country X has 25,000 unemployed people. By dividing the number of jobless people by the labour force and multiplying the result by 100, we may get the unemployment rate:(Unemployed / Labor force) x 100 equals the unemployment rate.(25,000 / 200,000) times 100 equals the unemployment rate.
12.5% is the unemployment rate.
Therefore, Country X has a 12.5% unemployment rate.
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When a boxer moves into an oncoming punch, the force experienced is
A) no different, but the timing is different
B) decreased
C) increased
D) all of the above
When a boxer moves into an oncoming punch, the force experienced is (C) increased
The reason that moving into an oncoming punch increases the force experienced is due to the principles of momentum and force. When two objects collide, the total momentum of the system is conserved,
A boxer moving into an oncoming punch, the force experienced is increased. This is because the force of the punch is added to the force of the boxer's movement. When the boxer moves into the punch, the relative speed between the punch and the boxer is increased, which increases the momentum and thus the force of the impact.
In addition, moving into the punch can also reduce the distance over which the punch is applied, which further increases the force experienced.
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What causes long run equilibrium?
Long-run equilibrium is a dynamic process that is influenced by a variety of factors, including market forces, competition, technological progress, and government intervention.
In economics, there are several factors that can contribute to long-run equilibrium, including:
Market forces: In a free market economy, prices are determined by the forces of supply and demand. If the demand for a good or service increases, the price will rise, which will encourage suppliers to produce more, eventually resulting in long-run equilibrium.
Competition: In a competitive market, firms will strive to produce goods and services as efficiently as possible, which will drive down costs and result in lower prices. This will increase demand and eventually lead to long-run equilibrium
Technological progress: Technological progress can lead to increased productivity and efficiency, which can lower costs and increase the supply of goods and services. This can result in lower prices and increased demand, leading to long-run equilibrium.
Government intervention: Government policies such as price controls, subsidies, and taxes can affect the supply and demand for goods and services, and can either help or hinder the achievement of long-run equilibrium.
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rods play a key role in dark adaptation and detects gray, black, and white. true or false?
Rods play key role in dark adaptation and detect gray, black and white. : true.
What is the role of Rods?Rods are photoreceptor cells in the retina of eye that are specialized for low-light vision and they contain a photopigment called rhodopsin, which is sensitive to light and helps in seeing in dimly lit environments.
In dark conditions, rods become highly sensitive, allowing to see even in very low light levels and this is known as dark adaptation. It takes about 30 minutes for the rods to fully adapt to the dark. As the light levels increase, sensitivity of the rods decreases and cones takes over as the primary source of visual input.
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What is 10 ml in tsp?
10 ml is equivalent to 2 teaspoons (tsp).
ml is an abbreviation for milliliter, which is a metric unit of volume commonly used in the scientific and medical fields. On the other hand, tsp is an abbreviation for teaspoon, which is a unit of volume commonly used in cooking and baking.
1 milliliter is equivalent to approximately 0.20288 teaspoons (tsp). Therefore, to convert milliliters to teaspoons, we can use the following conversion factor:
1 ml = 0.20288 tsp
To convert 10 ml to tsp, we can simply multiply 10 ml by the conversion factor:
10 ml x 0.20288 tsp/ml = 2.0288 tsp
Rounding to the nearest tenth, we get:
10 ml ≈ 2.0 tsp
Therefore, 10 ml is equivalent to 2 teaspoons (tsp).
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The capacitance of a capacitor does not depend onA.the separation between the platesB.the size of the platesC.the charges on the platesD.none of the above
The capacitance of a capacitor depends on the area of the plates, the distance between the plates, and the permittivity of the dielectric material and the correct option is (D)
The capacitance of a capacitor depends on the area of the plates, the distance between the plates, and the permittivity of the dielectric material between them.
It is clear that capacitance is directly proportional to the area of the plates and the permittivity of the dielectric material, and inversely proportional to the distance between the plates.
Now, let's come back to the question, which asks about the factor that does not affect the capacitance of a capacitor. The options given are the separation between the plates, the size of the plates, the charges on the plates, and none of the above.
The correct answer is option D, i.e., none of the above.
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If an objects acceleration is zero, then its speed must remain constant. True/False?
It is untrue to say that an object's speed must be constant if its acceleration is zero.
Is velocity constant? If acceleration is constant, then?A shift in velocity can occur in either its magnitude (speed), its direction, or both. Even if the speed may be constant in uniform circular motion, there is always an accompanying acceleration since the direction of the velocity is continually changing.
Is speed varying or constant?Explanation: In contrast to velocity, which has both magnitude and direction, speed is a vector and is therefore more than just a number. To keep the velocity constant, the speed must remain constant. A body can change directions while maintaining a constant speed (velocity).
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What is an area where atomic magnets point in the same direction called?
An area where atomic magnets point in the same direction is called a ferromagnetic domain.
What is area?Area is a quantity that measures the size of a two-dimensional surface or shape. It is expressed in square units such as square centimetres (cm2), square metres (m2) or square kilometres (km2). Area is used to describe the size of a garden, a house, a room, a city and much more. It can also be used to calculate the amount of material required for a project, such as paint, carpet or tiles. Knowing the area of a shape can help to calculate costs, and to make sure that enough materials are ordered.
In a domain, all the atoms are aligned in the same direction, creating a powerful magnetic field. This magnetic field is responsible for the magnetic properties of materials such as iron and nickel. When a ferromagnetic domain is exposed to an external magnetic field, it will become magnetized and align itself in the same direction. The strength of the magnetic field produced is based on the number of atoms in the domain and the alignment of the atoms.
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which subatomic particle is responsible for creating electrial charge?
Electrons are responsible for creating electrical charge.
Describe electrical charge.
When two materials rub against one another or come into touch, an electrical charge is produced. Electrons can actually rub off of one thing and onto another when the materials are in touch. This does not imply that any two materials will move electrons when rubbed together.
There are instances when the protons and electrons in an atom's outermost shells are not strongly attracted to one another. It is possible to force these electrons out of their orbits. They can move from one atom to another by exerting force. Electricity is made up of these moving electrons.
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What is the value of 31c to fahrenheit
The value of 30° Celsius is equal to 86° Fahrenheit.
Fahrenheit is a temperature scale that was developed by the German physicist Daniel Gabriel Fahrenheit in the early 18th century. The Fahrenheit scale is based on dividing the range between the freezing point and boiling point of water into 180 equal parts, with 32 degrees Fahrenheit (°F) representing the freezing point of water and 212 °F representing the boiling point of water at standard atmospheric pressure.
Fahrenheit is still commonly used in the United States, particularly for weather forecasts and measurements of air temperature. However, most other countries and scientific fields use the Celsius (or Centigrade) scale, which is based on dividing the range between the freezing and boiling points of water into 100 equal parts, with 0 °C representing the freezing point and 100 °C representing the boiling point of water at standard atmospheric pressure.
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What is the light source for terrestrial telescope?
A terrestrial telescope is a refracting telescope used to view distant earthly objects. The light source is the light falling from a distant object.
A terrestrial telescope is used to view enlarged, erect images of distant objects on the earth surface. There are three lenses in a terrestrial telescope. Objective lens, eye lens and erecting lens.
The working principle is refraction. The three convex lenses converge the rays to produce an image. The light from a distant object fall on the telescope. The incident rays falling on the objective lens is refracted and the intermediate image is formed. This image falls on the erecting lens and another intermediate image is formed.
The image from the erecting lens will act as the object for the eye lens. As light passes through the eye lens, an enlarged erect image is formed.
So the light source is the light from the distant object.
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A particle moves horizontally in uniform circular motion, over a horizontal xy plane. At one instant, it moves through the point at coordinates (4.00 m, 4.00 m) with a velocity of 5.00 m/s2 and an acceleration of +12.5 m/s2.What are the (a) x and (b) y coordinates of the center of the circular path?
Answer:
When traveling in circular motion with constant speed,
the instantaneous acceleration vector necessarily points toward the center.
Thus, the center is “straight up” from the cited point.
(a) Since the center is “straight up” from (4.00 m, 4.00 m),
the x coordinate of the center is 4.00m.
(b) To find out “how far up” we need to know the radius. Using a=
r
v
2
we find
r=
a
v
2
=
12.5m/s
2
(5.00m/s)
2
=2.00m.
a parallel-plate capacitor of capacitance c has plate area a and distance between plates d. the capacitor is connected to a battery with voltage v, fully charged and then disconnected. a slab of dielectric material with dielectric constant 4.0 is then inserted into capacitor, completely filling region between plates.
25% Part (a) After inserting the dielectric, the capacitance is now: 25% Part (b) After inserting the dielectric, the voltage across the capacitor is now: A 25% Part (c) After inserting the dielectric, the charged stored in the capacitor is now: 25% Part (d) After inserting the dielectric, the electric field in the capacitor is now:
The new electric field in the capacitor is E = V/d = (Q/A)d/εoεr/d = (Q/Aεoεr).
An electric field is a physical preach and it by the electric charges that extra a force and other charges extracting or appealing them electric conducted by electric charges with a statinary or moving the electric field is a vector field meaning that it is both electric and direction strength of electric field is measured in moles per meter electric field and used in a variety of application from our generation to medical treatment.
Part (a) After inserting the dielectric, the capacitance is now:
The capacitance of a parallel-plate capacitor can be calculated using the equation C = εoεrA/d, where εo is the permittivity of free space, εr is the relative permittivity of the medium between the plates, A is the area of the plates, and d is the distance between the plates. Since the dielectric medium has a relative permittivity of 4.0, the new capacitance of the capacitor is C = εoεrA/d = εo(4.0)(a)/d.
Part (b) After inserting the dielectric, the voltage across the capacitor is now:
The voltage across a capacitor is related to the amount of charge stored on it, which is proportional to the capacitance. Since the capacitance has increased, the voltage across the capacitor has also increased. The new voltage across the capacitor is V = Q/C = Q/(εoεrA/d) = (Q/A)d/εoεr, where Q is the charge stored in the capacitor.
Part (c) After inserting the dielectric, the charge stored in the capacitor is now:
The charge stored in a capacitor is related to the capacitance, so the charge stored in the capacitor has increased due to the increase in capacitance. The new charge stored in the capacitor is Q = Cv = (εoεrA/d)v = (A/d)vεoεr, where v is the voltage across the capacitor.
Part (d) After inserting the dielectric, the electric field in the capacitor is now:
The electric field in a capacitor is related to the voltage across the capacitor and the distance between the plates. Since the voltage across the capacitor has increased and the distance between the plates has not changed, the electric field has increased. The new electric field in the capacitor is E = V/d = (Q/A)d/εoεr/d = (Q/Aεoεr).
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Fill The Blank? During the Full Moon and New Moon days, the Sun, the Moon and the Earth are in the same line and the tides are at their highest level. These tides are called ______
Answer:
Spring Tides
Explanation:
Since all E.M. Radiation travels at the same speed, waves with
longer wavelengths have _________ frequencies
Answer:
Explanation:
The speed of a wave is a product of its wavelength and frequency
Wavelength is inversely proportional to frequency
Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.
The answer is shorter
what would happen if the earth stopped spinning for 1 second
Answer:
It would be as if everything on the surface were suddenly given a speed of over 1000 mph.
V = S / t
V = 25000 mi (1 rotation of earth) / 24 hours in one day)
V > 1000 mph speed of objects on surface due to rotation
How long does it take for an electromagnetic wave pulse to reach the Moon from the Earth?
Pls with calculations!
a student from sidney, australia compares the distance he obtained from the 1-st spark mark to the 25-th spark mark, with the similar result of a student who did the experiment in gaithersburg, maryland. both students operated identical setups powered with 60 hz ac, reported no missing spark marks, and achieved precision of their measurements in four significant figures. what difference in the results was found? data for the gravity acceleration on the two locations is provided in the text.
Answer
As the earth is an oblate spheroid, its radius near the equator is more than its radius near poles. Since for a source mass, the acceleration due to gravity is inversely proportional to the square of the radius of the earth, it varies with latitude due to the shape of the earth.
Explanation:
In which direction will a negatively charged particle experience a force in an electric field?
A.
in the same direction as the electric field
B.
in the opposite direction as the electric field
C.
at right angles to the electric field
D.
always downward
Answer:
D always downward because it is negative
A pipet is used to measure out 10 mL of water. If the mass of this volume of water is 9.990 g and the density of water is given as 0.9978 g/mL, what is the actual volume of water measured out? a.10.000 mL b. 9.990 mL c. The actual volume measured out is impossible to tell d. 10.012 mL
The correct working of this question with the given information is as follows:
mass of water taken = 9.990 gram ,
density of water taken = 0.9978 gram/ml
The formula to find out the volume of the water measured out is as follows:
volume in ml = mass in gram/density in gram per ml
We can now substitute values in this given formula to find volume of water taken in ml, which is
volume of water taken in ml = 9.990/0.9978 = 10.012 ml
Therefore the correct option to this question is option d. The actual volume of water measured is 10.012 ml
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An 1.1 kW dryer is used for 30 minutes every day. What would Georgia Power charge for the month (30 days) if their going rate is 11 cents/kWhr? A. $108.90 B.$1.82 C. $1,815.00 D. $12.80
Georgia’s Power charge for the month (30 days) if their going rate is 11 cents/kWhr wil be $1.82. the correct option is option B.
The energy used by the dryer in 30 minutes can be calculated as follows:
Energy used = Power x Time Energy used = 1.1 kW x 0.5 hours (30 minutes converted to hours)
Energy used = 0.55 kWh
The total energy used by the dryer in 30 days can be calculated as:
Total energy used = Energy used per day x Number of days Total energy used = 0.55 kWh/day x 30 days
Total energy used = 16.5 kWh
The cost of the energy used can be calculated as:
Cost = Total energy used x Rate Cost = 16.5 kWh x $0.11/kWh
Cost = $1.815
Therefore, the answer is (B) $1.82.
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An elevator suspended by a cable is descending at constant velocity. Name these forces
This is the downward-pulling force of gravity acting on the mass of the elevator. This is the force the elevator experiences from the cable, which balances out the gravitational pull and supports the elevator's weight.
What is gravitational force?The force of attraction between two mass-containing objects is known as gravitational force. The gravitational pull between two objects is inversely proportional to their squared distances and inversely proportional to their masses.
Isaac Newton's law of universal gravitation, which asserts that the equation determines the force of gravity between two objects, describes this.
[tex]F = G \times (m1 \times m2) / r^2[/tex]
where F is the force of gravity, G is the gravitational constant approximately [tex](6.67 \times 10^-11 N \frac{m^2}{kg^2}), m1[/tex]
Therefore, gravitational and tension force are the forces.
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When ABS activates do you need to pump the brakes?
No, when ABS (Anti-lock Braking System) activates, you do not need to pump the brakes.
ABS is a safety feature in modern cars that prevents the wheels from locking up during hard braking or in slippery conditions, which could cause the car to skid and lose control. When the ABS system detects that a wheel is about to lock up, it rapidly pulses the brakes on that wheel to prevent it from stopping rotating. This helps to maintain traction between the tires and the road, allowing the driver to maintain steering control and come to a stop safely. When ABS activates, you should keep your foot firmly on the brake pedal and let the system do its job. The pulsing or vibrations that you may feel in the brake pedal are normal and indicate that the ABS system is working properly. You should continue to steer the car in the desired direction and avoid any sudden movements, while the ABS system helps to slow down the car safely.
Pumping the brakes can actually interfere with the ABS system and reduce its effectiveness. So, it's important to trust the ABS system and let it do its job to ensure maximum safety during emergency braking situations.
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Bodily injury due to slips and falls is considered a physical hazard from conditions involving:
Bodily injury due to slips and falls is considered a physical hazard from conditions involving: surface residues.
Causes of InjuryIn general, injuries can be caused by:
Accidents and trauma, such as falls or hard knocks. Not warming up properly before exercising. Using inappropriate equipment or improper technique while exercising. Too push yourself (excessive exercise). Almost any part of the body can be injured, including muscles, bones, joints, and connective tissue (tendons and ligaments). The ankles and knees are particularly susceptible to injury.Learn more about bodily injury at
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1. Magnetic fields created by currents and magnets ___________ forces due to other magnetic fields.
A.
cannot be affected by
B.
cannot affect
C.
can affect
D.
always cancel out
2. In which direction will a negatively charged particle experience a force in an electric field?
A.
in the same direction as the electric field
B.
in the opposite direction as the electric field
C.
at right angles to the electric field
D.
always downward
3. A moving charge in a magnetic field experiences a force that acts perpendicularly to both ________.
A.
the charge's strength and its velocity
B.
the charge's velocity and the electric field
C.
the charge's velocity and the magnetic field
D.
the magnetic field and the charge's acceleration
4. Electric fields are MOST associated with ________.
A.
neutrons
B.
moving particles
C.
charged particles
D.
permanent magnets
Answer:
1. C. can be affected
2. B. in the opposite direction as the electric field
3. C. the charge's velocity and the magnetic field
4. I am sorry I have no answer for this one :(
Explanation:
1. Yes they actually can be affected because they are interacting with another magnectic field
2. The force exerted on a negatively charged particle by the electric field is always in " the direction opposite that of the electric field itself. "
3. In the context of the electric field as the set of almost all electric field vectors in a region of space, the most simplest kind of an electric field is a uniform electric field
how would the amount of incoming solar radiation change at the equator if earth’s axis were vertical instead of tilted?
If the Earth's axis were vertical instead of tilted, there would be no seasonal variation in the amount of incoming solar radiation at the equator.
Currently, the Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbit around the sun. This causes the amount of incoming solar radiation at the equator to vary over the course of the year, with the highest amounts of incoming radiation occurring during the solstices and the lowest amounts occurring during the equinoxes.
If the axis were vertical, the amount of incoming solar radiation would be more consistent throughout the year, but the poles would receive less solar radiation overall.
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How many shells does phosphorus have according to the Bohr model?
Phosphorus has three shells according to the Bohr model.
The Bohr model is a simplified atomic model that represents electrons orbiting the nucleus in discrete energy levels or shells. The first shell can hold up to two electrons, the second shell can hold up to eight electrons, and the third shell can hold up to 18 electrons.
Phosphorus has 15 electrons, so according to the Bohr model, the first shell has two electrons, the second shell has eight electrons, and the third shell has five electrons. .
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Which best explains how the coating works?
O The coating absorbs light that shines on it and
prevents the light from reflecting.
O The surface of the coating is rough, so light that
shines on it gets scattered in many directions.
O The coating bends light that passes through it and
prevents the light from reaching the user's eyes.
O The surface of the coating allows light from the room
to pass through but blocks the light from the screen.
The coating bends light that passes through it and
prevents the light from reaching the user's eyes. The correct answer is option three.
What is coating?This refers to a layer or film spread over a surface for protection or decoration. Coatings are specified as organic or inorganic according to the nature of their binder. Organic coatings are those that have an organic binder. Inorganic coatings are those that have an inorganic binder such as a silicate.
There are basically three types of coating name:
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NASA is conducting a test with the Perseverance Rover to investigate the gravity on Mars. They test a pendulum with a length of L on the Earth and find it has a period of 1.0 s. The Perseverance Rover has a similar pendulum with a length of L/2. If the acceleration due to gravity on Mars is 1/3 the acceleration due to gravity on the Earth, what is the period of the Perseverance Rover's pendulum on Mars?
If the time period of the pendulum in earth is 1 seconds, then the length L is 0.24 m. If length in mars is L/2 and acceleration due to gravity is 1/3rd of that of earth, the time period of the pendulum on mars is 1.216 seconds.
What is time period of oscillation ?The time period of oscillation of a pendulum is the time taken to complete oscillation. It is related to the length l, and acceleration due to gravity g as:
T = 2π √l/g
T for earth = 1 s
g for earth = 9.8 m/s²
then l = T/4π² × g
l = 1/4π²× 9.8 m/s²
= 0.24 m
If in mars L = L/2 = 0.24 /2 = 0.12 m
g = 9.8 m/s²/3 = 3.22m/s²
Then time period T = 2π × √0.12 m/3.22m/s²
T = 1.216 s.
Therefore, the time period of the Rover's pendulum in mars is 1.216 seconds.
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