Answer:
Electrons = 11
Explanation:
The amount of protons is = to the amount of electrons
earth orbits the sun once every 365.25 days. find the average angular speed of earth about the sun.
earth orbits the sun once every 365.25 days. find the average angular speed of earth about the sun.
99×10−7 rad/s.
When is there a decrease in air pressure on top of a plane's wing?
A)as the plane's speed decreases
B)as the plane's fuel runs low
C)as the plane's speed increases
Answer: Option C.
Explanation:
As the speed of plane increases and it moves forward it allows to push air on the bottom of the wings of the plane which results in increasing the pressure
The fact of air pressure on top of planes wing decreases with the increase bin plane's speed is based on Bernoulli’s Principle which states that with the fast moving air, the pressure decreases.
Therefore,n when the plane moves up it's wing pushes air down and on the same time the air pressure decreases at the top of the wing, this difference between the high and low pressure allows the flight to lift up.
Hence, the correct option is C.
Please label whether the
acceleration is positive, zero, or
negative:
A-B:
B-C:
C-D
Answer:
A-B: positive
B-C: zero
C-D: negative
Explanation:
In a velocity-time graph, acceleration is shown by the slope or steepness of the graph. A positive acceleration means that the line of the slope is upward, while a negative acceleration means that the line of the slope is downwards.
A horizontal line shows that the acceleration is 0, which means that the object is stationary.
Explain in detail the change in energy tore when a ball of dough i dropped onto a kitchen counter
Dropping a ball of dough onto a kitchen counter, its energy store of potential energy is converted into kinetic energy as it falls. Upon impact, the kinetic energy is converted into potential, thermal, and sound energy.
When a ball of dough is dropped onto a kitchen counter, there is a change in the energy store of the dough. Initially, the dough has potential energy due to its position above the counter. As the dough is dropped, this potential energy is converted into kinetic energy, or energy of motion. As the dough falls, it gains speed and thus increases in kinetic energy.
When the dough strikes the counter, the kinetic energy is converted into a combination of potential energy and thermal energy. The dough compresses and deforms upon impact, increasing its potential energy. The compression and deformation also generates heat, which increases the thermal energy of the dough. A portion of the kinetic energy is also converted into sound energy as the dough makes contact with the counter.
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Silver has a resistivity of 1.6 x 10
m. If you make a silver wire that's 10
m long with an area of 3 x 10-6 m², what is the wire's resistance? (4 points)
Explanation:
click on the image and thats your answer
A 4-kg toy car travels 3m/s. What’s it’s KE? What would be it KE if we doubled its velocity? How about tripled?
The kinetic energy of toy car is 18J. When it's velocity doubled, K.E is 72J and it's velocity tripled, then K.E is 162J.
Why is kinetic energy inversely associated with velocity?A moving object's kinetic energy is inversely proportional to its mass and to the square of its velocity. Similarly, an objects with equivalent mass and speed will have double the kinetic energy as one with double the mass and speed will have four times the kinetic energy.
Kinetic energy(K.E) = 1/2 mv^2
Mass of toy = 4Kg
V= 3m/s
K.E => 1/2 x 4 x 3^2
=> 18J
If velocity doubled, which means the new velocity = 6m/s
K.E => 1/2 x 4 x 6^2
=> 72J
If velocity tripled, which means the new velocity = 9m/s
K.E => 1/2 x 4 x 9^2
=> 162J
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A yellow lamp emits light with a wavelength of 6.00 · 10-7 m. How many such photons are required to produce 10.0 joules worth of photons? _____ photons 7.52 x 10 48 3.01 x 10 19 3.01 x 10 49 3.32 x 10 -18
A yellow lamp emits light with a wavelength of 6.00 ·. 3.01 x 10 19 photons such photons are required to produce 10.0 joules worth of photons.
Why are photons immortal?The quanta that make up light are called photons, and in the absence of any other interactions that would cause their characteristics to change, they remain ethereally stable with no indication that they would transform into any other particle.
In addition to releasing energy and generating heat, chemical activities within your body also release small quantities of photons, which are fundamental light particles. The bottom portion of your face and late afternoon are when the glow is most prominent.
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A 0.50 kg mass is attached to a string 1.2 m long and moves in a horizontal circle completing 5 revolution in 1.5 seconds. Calculate:
a) the centripetal acceleration of the mass.
b) the tension in the string.
a) The centripetal acceleration of the mass is 526.38 m/s².
b) The tension in the string is 263.19 N.
What is centripetal acceleration?Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any item travelling in a circle with an acceleration vector pointing in the direction of the circle's center.
Angular speed of the mass = (5/1.5) revolution per second
= (5 ×2π)/1.5 rad/s
= 20.94 rad/s
a) the centripetal acceleration of the mass = ω²r
= (20.94)²×1.2 m/s²
= 526.38 m/s².
b) the tension in the string = mω²r
= 0.50 kg × 526.38 m/s²
= 263.19 N.
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When sound waves are traveling in a medium, the energy is transferring
up and down
left to right
in and out
all around
When sound waves are traveling in a medium, the energy is transferring all around.
Option D is the correct answer
What is sound energy?Sound is the movement of energy through a substance – like air or water and it is caused by vibrations.
Sound wave is an example of a mechanical wave because it requires material medium for its propagation.
A wave is a vibration or disturbance that travels from one point to another and carries energy.
The movement of this sound wave, when it transfers energy from one point of medium to another is known as sound wave propagation.
Thus, we can conclude that during the propagation of sound waves, energy is transferred to the entire medium.
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What is the difference between a physical and chemical change ?
Answer:
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not.
However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.
Hope this helps :)
According to Gordon Allport, which type of peronality trait are the mot dominant?
Allport believed that personality of human is categorized into three traits:Cardinal, Central and secondary. Among these traits, there exists a dominant force that defines your personality and influence your behavior, feelings and thoughts. This is called Cardinal Traits.
About Gordon AllportGordon AllportGordon Allport (November 11, 1897 – October 9, 1967) was a psychologist. He earned his doctorate in psychology from Harvard in 1922. He spent his career developing theories, studying social issues, such as prejudice, suspicion, communal, and developing personality tests.
According to Allport, one of the things that most motivates humans is the tendency to fulfill their biological needs. This tendency is called by Allport with opportunistic functioning. Opportunistic functioning is reactive, past oriented, and biological.
Nevertheless, Allport considers this opportunistic functioning is not very important in understanding human behavior, in fact most human behavior is motivated by something else, something that functions in the framework of self-expression, which Allport calls ''Propriate functioning''.
The point is that whatever a person does in life is usually for the sake of showing who he is. This self-function is proactive, future-oriented, and psychological. The word propriate comes from the word proprium which means self-concept. Allport's intention by putting more pressure on the proprium is to define the concept of self as carefully as possible.
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Define Tension in a string?
Answer:
Tension is the pulling force transmitted axially by the means of a string, a rope, chain, or similar object, or by each end of a rod, truss member, or similar three-dimensional object; tension might also be described as the action-reaction pair of forces acting at each end of said elements
A body falls freely from rest on Earth (g= - 10 m/s)
1. The displacement at t = 3 sis -45 m
2. The time for it to reach a speed of 25 m/s is I $
3. The time to fall 320 m is 8 s.
4. The speed after falling 80 m is m/s.
1. The displacement of a body falling freely from rest at time t seconds is given by the formula d = -1/2 gt^2 + vt + d0, where g is the acceleration due to gravity (in this case, -10 m/s), v is the initial velocity (in this case, 0 m/s), and d0 is the initial displacement (in this case, 0 m). Plugging in the values, we get d = -1/2 (-10 m/s) (3 s)^2 + 0 m/s (3 s) + 0 m = -45 m.
2. The speed of a body falling freely from rest at time t seconds is given by the formula v = gt + v0, where g is the acceleration due to gravity (in this case, -10 m/s) and v0 is the initial velocity (in this case, 0 m/s). Plugging in the values and setting v = 25 m/s, we get 25 m/s = (-10 m/s)t + 0 m/s. Solving for t, we get t = 2.5 s.
3. The displacement of a body falling freely from rest at time t seconds is given by the formula d = -1/2 gt^2 + vt + d0, where g is the acceleration due to gravity (in this case, -10 m/s), v is the initial velocity (in this case, 0 m/s), and d0 is the initial displacement (in this case, 0 m). Plugging in the values and setting d = -320 m, we get -320 m = -1/2 (-10 m/s) t^2 + 0 m/s t + 0 m. Solving for t, we get t = 8 s.
4. The speed of a body falling freely from rest at time t seconds is given by the formula v = gt + v0, where g is the acceleration due to gravity (in this case, -10 m/s) and v0 is the initial velocity (in this case, 0 m/s). To find the speed after falling 80 m, we need to find the time t that corresponds to this displacement. We can use the formula for displacement to find t: d = -1/2 gt^2 + vt + d0. Plugging in the values and setting d = -80 m, we get -80 m = -1/2 (-10 m/s) t^2 + 0 m/s t + 0 m. Solving for t, we get t = 2 s. Plugging this value of t back into the formula for speed, we get v = (-10 m/s) (2 s) + 0 m/s = -20 m/s.
5. The acceleration of an object is given by the formula a = (vf - vi)/t, where vf is the final velocity, vi is the initial velocity, and t is the time elapsed. In this case, the initial velocity is -20 m/s and the time elapsed is 1 s. The final velocity is not given, so we cannot use this formula to find the acceleration.
6. The displacement of an object with constant acceleration is given by the formula d = 1/2 at^2 + vt + d0, where a is the acceleration, v is the initial velocity, t is the time elapsed, and d0 is the initial displacement. In this case, the acceleration is -10 m/s^2, the initial velocity is -20 m/s, the time elapsed is 4 s.
What is speed?
Speed is a measure of how fast an object is moving. It is defined as the distance an object travels per unit of time. In equation form, speed is represented by the letter v and is equal to the distance d traveled divided by the time elapsed t: v = d/t. The unit of speed is typically meters per second (m/s) or kilometers per hour (km/h). For example, if a car travels a distance of 200 meters in 10 seconds, its speed is v = 200 m / 10 s = 20 m/s.
Therefore, the correct answer is as given above
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The creator of the diagram above considers gerrymandering to be "stealing an election." How do the maps exemplify this?
OA. Map A is fair to members of the Red Party.
OB. Map B is fair to members of the Blue Party.
O C. The maps show representation that is proportional to the voters registered with each party.
O D. Both maps give disproportionate representation to the party that had the power to draw the lines.
M
31
DELL
District-based voting is used to choose representatives in Congress, state legislatures, and many county and municipal positions. In contrast, populations shift. Depending on the district, folks may move in or move out. The demographics of districts may also shift.
Option C is correct Answer.
Why does redistricting matter?Election power is impacted by redistricting. It decides which political party rules the US Congress as well as the state and municipal governments. Redistricting so directly influences which issues a legislature decides to address and which to disregard.Also impacted by redistricting is the representation of the varied populations in the country's legislative bodies. By using redistricting, for instance, one can guarantee that communities of color have an equal opportunity to choose politicians who share their perspective and will support their issues. Another option is to deny them a place at the table. same goes for all other categories of communities of interest.To Learn more About District-based voting Refer To:
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What is the momentum of a child and wagon if the total mass of the child and wagon is 22 kg and the velocity is 1. 5 m/s?.
The momentum of a child and wagon if the total mass of the child and wagon given is 22 kg and the velocity is 1. 5 m/s is 33 kg⋅m/s.
What is momentum and its S.I Unit?The product of an object's mass and velocity is its momentum (p=mv). It has both a magnitude and a direction, making it a vector quantity.Momentum's S.I. unit is 'kg⋅m/s'Solution:Given:
Mass collectively=22 kg
velocity= 1. 5 m/s
To find momentum we use the formula for momentum which is;
p=mv
Putting the values we get
p= 22*1.5
p=33 kg⋅m/s
Hence, The momentum of a child and wagon when the total given mass of the child and wagon is 22 kg and the velocity is 1. 5 m/s is 33 kg⋅m/s.
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The volume of gas kept at a constant pressure varies inversely with the temperature t. If the temperature is 50 degrees, the volume is 20 cubic feet. What will the volume be when the temperature is 100 degrees?.
The volume of that gas in the 100 degrees temperature will be 100 cubic feet. The condition of the area is isobar or the same pressure. Hence, you have to formulate the solution based on isobars formula.
How to calculate the volume for that condition?As per data given, previous volume (V1) = 20 cubic feet; previous temperature (t1) = 50 degrees; current temperature(t2) = 100 degrees. the condition of the area is in the constant pressure or isobars. The formula we will use in the isobar is V1 : V2 = t1 : t2. So, the calculation would be:
V1 : V2 = t1 : t2
20 : V2 = 20 : 100
20 V2 = 20 x 100
V2 = 100 cubic feet
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The motion of an object moving with uniform circular motion is always to the circle, so the speed of an object moving in a circle is known as speed.
The motion of an object moving with uniform circular motion is always tangent to the circle, so the speed of an object moving in a circle is known as the tangential speed..
Uniform circular motion is the motion of an object in a circular path with a constant speed and the direction of velocity is perpendicular to the direction of acceleration. Examples of objects that experience uniform circular motion are wheels and clockwise motion where these objects have a constant linear speed, constant angular velocity, and constant centripetal acceleration. The speed in the circular motion of the object is also called the tangential speed where the object is moving in a circle in the direction of offending its spin path.
Centripetal acceleration is the acceleration directed towards the center of the circle. this centripetal acceleration that makes the wheel and clockwork move in a circle because they are accelerating towards the center of the circle.
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Rock dropped from 18.16 m above the ground how fast will traveling when it reaches the ground
Answer: The Rock will be traveling at 5.93 m/s or around 21.4 km/hr or 13.3 mi/hr when it reaches the ground. (you can use go0gle to convert the speeds to something else, if needed)✅
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Explanation: ✅
The speed of the rock when it reaches the ground can be calculated using the equation:
v = √(2gh)
where v is the velocity, g is the acceleration due to gravity (approximately 9.8 m/s^2 on Earth), and h is the height from which the rock is dropped.
So, the speed of the rock when it reaches the ground will be approximately:
v = √(2 * 9.8 * 18.16) = √(35.1328) = 5.93 m/s
It will be traveling at 5.93 m/s or around 21.4 km/hr or 13.3 mi/hr when it reaches the ground.
If you apply a force of 10 n to a box and push it 10 m in 10 s, how much power did you deliver?.
According to the given statement 10W power did you deliver.
What is power?Power is the rate at which energy is transferred, transformed, or converted. It is a measure of the amount of work that can be done in a given amount of time. In physics, power is the product of the time rate of change of energy, or the rate of doing work. Power is measured in watts or joules per second (J/s). It is an important concept in many fields, such as mechanics, thermodynamics, electromagnetism, and nuclear physics. It is also used to measure the capacity of machines, devices, and systems to perform work.
Force=10N
Distance =10m
Time=10s
Power =?
But Power= Work done/Time taken
P= W/s
W= F x d=10x10=100
P=100/10
P=10W
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233kg car is traveling at 12 m/s what is kinetic energy of the car ?
Answer: 33,992 J (Joules)
Explanation:
The kinetic energy of an object is the energy it possesses due to its motion. The formula for kinetic energy is: Kinetic energy = 1/2 x mass x velocity^2
So, for a 233 kg car traveling at 12 m/s, the kinetic energy can be calculated as:
Kinetic energy = 1/2 x 233 kg x (12 m/s)^2
= 1/2 x 233 kg x 144 m^2/s^2
= 33,992 J (Joules)
It is important to note that the unit of energy is Joules (J).
In this case, the car has 33,992 Joules of kinetic energy. This energy represents the ability of the car to do work, such as causing damage if it collides with an object, or to overcome a force such as friction or air resistance. Kinetic energy increases with the mass of the object and the square of its velocity.
helpp!! Which of the following statements about the independent variable are correct?
a.The independent variable is mentioned in the hypothesis.
b.Scientists adjust the dependent variable to see its impact in the independent variable.
c.The independent variable is manipulated by the scientist.
d.The independent variable is held constant during an experiment.
e.A hypothesis predicts a relationship between the independent and dependent variable.
The statements about the independent variable that are correct are:
The independent variable is mentioned in the hypothesis.The independent variable is manipulated by the scientist.A hypothesis predicts a relationship between the independent and dependent variables.The correct option are A, C, and E.
What are independent and dependent variables?A variable that is independent is precisely what it sounds like. It is a stand-alone variable that is unaffected by the other variables you are attempting to assess. Age, for instance, could be an independent variable.
The dependent variable is the variable that is being measured in an experiment
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How is a "viscous fluid" different from a "liquid"?
Answer: A viscous fluid is thicker and more difficult to pour than a typical liquid, while a liquid is a substance that has a definite volume but no fixed shape and can flow to conform to the shape of its container. ✅
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Lations, some variation of the question "s/decimals do I have to include in my mes up. By converting all of your numbers on you will always have 3 significant digits in You can choose to rep in standard notation, ju are included.
Perform the following calculations and report your answer with three
101,455,348 - 1,111,419 = 91300000000000
0.000000612 X 0.00031119 = 1.9e-10
297,060 + 0.0004839 = 61400000000
The following calculations in standard notation is 9.13[tex]e_{1}[/tex], 1.90[tex]e^{-10}[/tex], 6.14[tex]e^{8}[/tex].
A standard form of a number in maths is basically mentioned for the representation of large numbers or small numbers. We use exponents to represent such numbers in standard form.
Write the first number from the given number. Add the decimal point after the first number. Now, count the number of digits after the first number from the given number and write it in the power of 10.The following calculations and report your answer with three
101,455,348 ÷ 1,111,419 =91.28452
=91.28452 ( in real numbers)
=9.13×[tex]10^{1}[/tex] (Scientific notation)
=9.13[tex]e^{1}[/tex]
Therefore, the answer is 9.13[tex]e_{1}[/tex].
(ii). 0.000000612 × 0.00031119 = 0.000000000190
=0.000000000190 ( in real numbers)
=1.90×[tex]10^{-10}[/tex] (in scientific notation)
=1.90[tex]e^{-10}[/tex]
Therefore, the answer is 1.90[tex]e^{-10}[/tex].
(iii). 297,060 + 0.0004839 =613900000
=613900000 ( in real numbers)
=6.14×[tex]10^{8}[/tex] (in scientific notation)
=6.14[tex]e^{8}[/tex]
Therefore, the answer is 6.14[tex]e^{8}[/tex].
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How many oxygen atoms are in one mole of O2 molecules?
2 oxygen atoms
Solution — 1 molecule of O2 = 2 oxygen atoms So, 1 mole of O2 = 2 mole oxygen atoms = 2 × 6.022 × 1023 = 12.044 ×1023 oxygen atoms.
There are 12.046×10²³ molecules in one mole of O₂ gas.
Each molecule of oxygen has 2 atoms. Avogadro explained that at constant pressure and volume there are certain number of molecules in one mole of gas, irrespective of the type of gas. The number of molecules in 22.4 L of any gas is 6.023 × 10²³. This constant is known as avogadro constant. This is one of the most important constant in the chemistry. If the atomic weight of a gas is 35. It means 35 is the weight of the one mole of gas or of 6.023 × 10²³ molecules of that gas. Atomic weight of any gas is the weight of a fixed number of molecules, which is determined by the avogadro's number. So the number of molecules in one mole of O₂ gas = 2 × 6.023 × 10²³
= 12.046×10²³
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what would happen if the weight of people increased on a roller coaster?
The thing which would happen if the weight of people increased on a roller coaster is that it will make it harder for it to slow down.
What is Weight?This is referred to as the force acting on the object due to gravity and it is denoted as W= mg where m is mass and g is acceleration due to gravity.
We should note that the larger the mass, the larger the momentum, and the more force you need to change it. Weight however does not make a roller coaster go faster but it does make it harder to slow down which is therefore the reason why it was chosen as the correct choice.
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As the first five elements in group 15 are considered in order of increasing atomic number, first ionization energy.
The first ionization energy in group 15 elements in increasing atomic number decreases.
What is ionization energy?Ionization energy is the amount of energy requires to detach one electron from the atom. In the periodic table the ionization energy decreases as one goes down.
Therefore ionization energy is the quantity of energy that an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron resulting in a cation. This energy is usually expressed in kJ/mol or the amount of energy it takes for all the atoms in a mole to lose one electron each.
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If a negatively charged rod is held near an uncharged metal ball, the metal ball?1. becomes positively charged.2. becomes negatively charged.3. Unable to determine.4. is unaffected.5. becomes polar.
The correct option is 2 because The negatively charged rod will induce a small amount of negative charge on the surface of the uncharged metal ball, causing a force of attraction between the two.
Is Earth positively or negatively charged?Although Earth is electrically neutral, its interior and crust each have a different charge. In clouds, the top face is negatively charged while the bottom face is positively charged.
Lightning has a negative charge, right?About 90 to 95 percent of all lightning that you ever witness is negative lightning, which occurs when an ions is transported from a cloud to the ground. Positive lightning, on the other hand, occurs as a result of the positive charge that accumulates at the cloud's top.
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A plane intersects one nappe of a double-napped cone such that it is perpendicular to the vertical axis of the cone. Which conic section is formed?.
Answer:
Hyperbola
Explanation:
Hyperbola: When the plane intersects the double napped cone such that the angle between the vertex and the angle is less than the vertex angle, the resulting conic section in the form of an open curve is called a hyperbola.
A student performs an experiment to determine the volume of hydrogen gas produced when a given mass.
A student performs an experiment to determine the volume of hydrogen gas produced when a given mass.
To determine the volume of hydrogen gas produced in a chemical reaction, the student likely performed a series of steps. Here is an example procedure that the student may have followed
Measure the mass of the reactant that will produce the hydrogen gas.Prepare the apparatus by filling a gas collection tube with water and inverting it over a water bath.Add the reactant to the reaction vessel, which may be a flask or test tube.Seal the reaction vessel and start a stopwatch to record the reaction time.Observe the gas bubbles rising through the water in the collection tube.Once the reaction has completed, stop the stopwatch and measure the volume of gas collected in the tube.Adjust the volume measurement for temperature and pressure, if necessary, using the ideal gas law.Hence, by following this procedure, the student should be able to determine the volume of hydrogen gas produced when a given mass of reactant is used. This information can then be used to calculate the stoichiometry of the reaction, determine reaction rate, or make other useful observations about the chemical system under study.
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A 1,500 kg satellite is in orbit around Earth at a distance of 1 Earth radius above the surface.
Earth's mass is 5.97 x 1024 kg, and its radius is 6.37 x 106 m.
Calculate the magnitude of the gravitational force acting on the satellite.
The magnitude of the gravitational force acting on the satellite is 3.16 x 10^22 N.
How calculate the gravitational force?The gravitational force between two objects can be calculated using Newton's Law of Universal Gravitation: F = G * (m1 * m2) / r^2, where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers.
To calculate the gravitational force acting on the satellite, we need to know the mass of the satellite (m1) and the distance between the center of Earth (m2) and the center of the satellite (r).
The mass of the satellite is given as 1,500 kg
The distance between the center of Earth and the center of the satellite is the distance from the surface of Earth to the satellite + the radius of Earth:
r = (1 Earth radius + 6.37 x 106 m)
We can use the given information to calculate the force of gravity acting on the satellite:
F = G * (m1 * m2) / r^2
F = (6.67 x 10^-11 N*(m^2)/(kg^2)) * (1,500 kg * 5.97 x 1024 kg) / (6.37 x 106 m + 6.37 x 106 m)^2
F = 3.16 x 10^22 N
The magnitude of the gravitational force acting on the satellite is 3.16 x 10^22 N.
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Answer:
3,700 N
Explanation:
Someone already explained it, but didn't give an answer that can be put into khan academy.