Answer:Moon phases are determined by the relative positions of the Moon, Earth, and Sun.
Explanation:
Instead, the Moon's phase depends only on its position relative to Earth and the Sun. The Moon doesn't make its own light, it just reflects the Sun's light as all the planets do.
3. A ball is hit upward with a speed of 7.5 m/s. How long does the ball take to reach maximum height?
Answer:
t = 0.75 seconds
Explanation:
Given that,
The initial speed of a ball, u = 7.5 m/s
We need to find the time taken by the ball to reach the maximum height. Let t is the time taken.
At maximum height, its final speed, v = 0 and it will move under the action of gravity.
Using the equation of motion to find t.
[tex]v=u+at[/tex]
Use a = -g
[tex]v=u-gt\\\\t=\dfrac{u}{g}\\\\t=\dfrac{7.5}{10}\\\\t=0.75\ s[/tex]
Hence, the ball will take 0.75 seconds to reach the maximum height.
Which of the following is the most likely consrquence of gang involvement
Answer:
????
Explanation:
was their supposed to be a picture?
what other factor affected the gravitational force between the two objects in this simulation?
Answer:
The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases
Give three examples of how a cell's shape makes possible the cell's function
Answer:
A) a nerve cells long extensions enable it to transmit electrical impulses from one body part to another
B) the sheet like organization of epithelial cells enables them to protect underlying cells
C) the alignment of contractile proteins within muscle cells enables them to contract, pulling closer together the structures to which they attach
Explanation:
PLEASE ANSWER ASAP
The thermal energy produced by an electric heater in three minutes is used to melt wax. The
solid wax is initially at its melting point of 60 0C.
The specific latent heat of the wax is 220 J / g. The heater supplies 7700 J of thermal energy to
the wax. Some of the wax melts.
How much wax melts?
Answer:
m = 35 g = 0.035 kg
Explanation:
The amount of heat required by a specific mass of wax to be melted at its melting point can be given by the following formula:
[tex]Q = mL[/tex]
where,
Q = Heat Supplied by the Heater = 7700 J
m = mass of wax melted = ?
L = Latent Heat of Fusion of Wax = 220 J/g
Therefore,
[tex]7700\ J = m(220\ J/g)\\m = \frac{7700\ J}{220\ J/g}\\\\[/tex]
m = 35 g = 0.035 kg
what is the correct answer?
Answer:
-1/6 im sure to this answer
Explanation:
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Answer:
-1/6
Explanation:
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Using the matrices below, determine if the product of AB is defined. If defined, state its dimensions.
a.
not defined
c.
defined, 4 x 2
b.
defined, 2 x 4
d.
defined 3 x 4
Please select the best answer from the choices provided
The answer is, D. defined 3 x 4
Explanation:
But the only problem is, product A is not 3 x 4.
Product A is 2 x 3, so to make this a clear answer: Product B is D. defined 3 x 4 and Product A is A. not defined or alternate answer 2 x 3
what do you know about atom
Answer:
The smallest part of the elements which contains matters in them are atoms :)
What's 3,278,000 as scientific notation ?
Answer:
[tex] 3.278 \times {10}^{6} [/tex]
which two solids most likelyhave the lowest melting point??
Answer:
The two solids in the right boxes
Explanation:
The two solids in the right boxes will most likely have the lowest boiling point and this can be inferred from their molecular configuration.
Boiling point as physical change is determined by the intermolecular forces within a compound. Very strong intermolecular interactions will be difficult to break. This is shown by the two models in the left boxes. For the right boxes, the connections are very weak and they will have low boiling points.Which wave form will Rayleigh waves most likely create?
A. an ocean wave
B. a skier moving down a mountain hill
C. a car traveling through the sand dunes
D. a whale gliding along the ocean's surface
When riding on a bus, you can tell you are moving by
observing the motion of objects like other moving vehicles
outside the window.
True or False?
Answer:
True
Explanation:
A balloon that has been rubbed on wool has a negative charge. When the balloon is held over—but not touching—some bits of paper, some of the bits jump up to the balloon. Why does the paper move?
Answer:
This process is known as static electricity
Explanation:
When balloon is rubbed on the wool , a negative charge is usually formed. When the balloon is then held over—but not touching—some bits of paper, some of the bits jump up to the balloon. The bits which jump up to the balloon are positive charged and we know that unlike charges attract.
This process explains static electricity which is when the charges on a material are not in a balanced state.
An insulated rigid tank with a volume of 0.57 m3, contains 4 kg of Argon gas at 450 kPa and 30 C. A valve is now opened, and the Argon is slowly allowed to escape until the pressure inside drops to 200 kPa. Assuming the Argon remaining inside the tank has undergone a reversible, adiabatic process, determine the final mass in the tank,
Answer:
The value is [tex]m_2 = 2.46 \ kg[/tex]
Explanation:
From the question we are told that
The volume of the tank is [tex]V = 0.57 \ m^3[/tex]
The mass of the Argon it contains is [tex]m = 4 \ kg[/tex]
The initial pressure on of the gas is [tex]P_1 = 450 kPa = 450 *10^{3} \ Pa[/tex]
The initial temperature is [tex]T_1 = 30^oC = 30 + 273 = 303 \ K[/tex]
The new pressure inside the tank is [tex]P_2 = 200 \ kPa = 200 *10^{3} \ Pa[/tex]
Gnerally given that the Argon remaining inside the tank has undergone a reversible, adiabatic process, then the final temperature of the Argon gas is mathematically represented as
[tex]T_2 = T_1 * [\frac{P_2}{P_1} ]^{ \frac{(k - 1 )}{k} }[/tex]
Here k is the specific heat ratio of Argon with value [tex]k = 1.667[/tex]
So
[tex]T_2 = 303 * [\frac{200}{450} ]^{ \frac{(1.667- 1 )}{1.667} }[/tex]
=> [tex]T_2 = 219 \ K[/tex]
Generally from the ideal gas equation
[tex]PV = mRT_2[/tex]
So
[tex]\frac{P_1V}{P_2V} =\frac{ m_1 * R * T_1 }{ m_2 * R * T_2}[/tex]
Here R is the gas constant with value [tex]R = 8.314 \J \ K^{-1}\ mol^{-1}[/tex]
=> [tex]m_2 = \frac{P_2 * T_1 }{ P_1 * T_2 } * m_1[/tex]
=> [tex]m_2 = \frac{200 * 303 }{ 450 * 219 } * 4[/tex]
=> [tex]m_2 = 2.46 \ kg[/tex]
food and electricity are the examples of_________________
Answer:
sources of energy
Answer:
energy
Explanation:
hope this is the right answer
The Hawaiian islands formed when molten material erupted from the ocean floor. As the lava flowed out, cooled, and hardened, massive rocks formed. These rocks have a very fine texture and tiny crystals that cannot be seen with the naked eye. These massive rocks formed into the islands that are present today.
What type of igneous rock are the Hawaiian islands?
Answer:
Explanation:
The most common type of igneous rock making up the Hawaiian island chain is Mafic rock. Furthermore, the most common type of Mafic rock is basalt.
Answer:
Extrusive
Conclusion of experiment for determine the magnitude and direction of magnetic field of earth What we will write in our experiment about conclusion please
Answer:
The magnitude and direction of the earth's magnetic field is between the range of 0.25 to 0.65 Gauss considering the angle of the earth's north pole is eleven degrees.
Explanation:
The magnetic field or force of the earth is attributed to a dynamo effect but the electric charges are not constant. The origin of the field is believed to be from the molten metallic core and the earth's rotation.
The Force of the magnetic field is a function of the velocity or speed 'v' of the electric charges 'q' and the field itself 'B' at an angle of sin∅. That is,
F = vqBsin∅
A 0.050 kg golf ball leaves the tee at a speed of 75.0 m/s. The club is in contact with the
ball for 0.020 s. What is the net force of the club on the ball?
The ball accelerates from rest to 75.0 m/s in a matter of 0.020 s, so the drive applies an (average) acceleration of
a = (75.0 m/s - 0) / (0.020 s) = 3750 m/s²
Assuming this acceleration was constant, then the net force F on the ball is
F = (0.050 kg) (3750 m/s²) = 187.5 N ≈ 190 N
Which of Newton's laws of motion describes the motion of an object that has a net
force of ON?
Newton's first and second laws of motion both do, but I think the one you're looking for is: The First Law of Motion. That description is a little more direct.
It says that if an object is not acted on by a net external force, then it continues in "constant, uniform motion".
_____ increase your risk
Answer: All forms of distraction.
three collinear forces,F1=45N west,F2=63N east and an unknown force F3 are applied to an object.The resultant force of the three forces is 12N west.
Show by means of a tail to head method of vector addition how the magnitude of F3 could be found?
Take east to be the positive direction. Then the resultant force from adding F₁ and F₂ is
F₁ + F₂ = (-45 N) + 63 N = 18 N
which is positive, so it's directed east.
To this we add a third force F₃ such that the resultant is 12 N pointing west, making it negative, so that
18 N + F₃ = -12 N
F₃ = -30 N
So F₃ has a magnitude of 30 N and points west.
in winter morning as soon as we wake up , the air inside the room is cold but if we go out and return to the same room , we feel warm why?
What is S.I units ?
The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.
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if the amount of work done remains constant but occurs over less time how does this affect the amount of power exerted?
Answer:
The amount of power will be increased.
Explanation:
If the work remains constant but the time is reduced the power increases. Since power is defined as the relationship between work overtime. By means of the following equation, we can see this relationship.
[tex]P=W/t[/tex]
where:
P = power [Watts]
W = work [J] (units of joules)
t = time [s]
Let's assume with an example the above written.
If we have an electric motor that exerts a work of 950 [J], and the time used is 5 [s], the power is:
[tex]P = 950/5\\P = 190 [W][/tex]
Now if we want to accelerate the work done and use 2 seconds for the time, we will have:
[tex]P=950/2\\P=475 [W][/tex]
We want to see how maintaining the work constant but reducing the time in which it occurs affects the power. We will see that the power increases.
We define power as the amount of work done per unit of time.
So we can compute power as the quotient between the work done and the time in which it is done.
So, if we reduce the time in which the work is done, then the denominator is smaller, thus, the power will be larger.
This means that maintaining the work constant, and reducing the time in which it is done, increases the amount of power exerted.
If you want to learn more, you can read:
https://brainly.com/question/3854047
Current in a wire continusly increasing what will be the effect on the magnitude of the displacement current
Explanation:
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Answer: Sad y’all have holiday homework
I REALLY NEED HELP ON PHYSICS!!!
10 POINTS
Answer:
25.021 sec
Explanation:
v=d/t
-2.33= - 58.3/t
t= - 58.3/-2.33
t=25.021 sec
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How do endocytosis and exocytosis differ?
Answer:
Endocytosis and exocytosis are both forms of active transport. Endocytosis is where materials enter the cell and exocytosis is where materials exit the cell.
A car is moving along a straight horizontal road. The car has 1.6MJ of kinetic energy. The car accelerates for 20s until the kinetic energy of the car increases to 2.5MJ. What is the minimum average power developed by the car engine for this acceleration?
Answer:
P = 45 [kW]
Explanation:
We must find the difference in kinetic energy during the 20 seconds.
[tex]D_{kE}=2.5-1.6\\D_{kE}=0.9[MJ][/tex]
Power is defined as the relationship between energy over time.
[tex]P=D_{kE}/t\\P=0.9/20\\P=0.045[MW] or 45 [kW][/tex]
What does the unit Newton equal to in Sl units?
Answer:
Newton is the SI unit of force
Explanation:
A force of 1 Newton is said to be applied when an object of 1kg mass is transferred into motion at 1m/s.
The Newton is the force that accelerates 1 kilogram of mass at the rate of 1 meter per second^2.
In SI base units, 1N = 1 kg-m/s^2 .