Answer:
The centripetal acceleration that the moon experiences will be almost equal to the gravitational force that the Earth does in the moon,
Now, remember these two things:
F = m*a
and Fg = G*M1*M2/r^2
the first equation says that the force applied to something is equal to the mass of the object times the acceleration.
The second equation is for the gravitational force, where G is a constant, M1 and M2 are the masses of both objects, in this case, the Earth and the moon, and r is the distance.
We know that the acceleration in the surface of the Earth is:
a = Fg/M2 = g = G*M1/(RE)^2
now, for the moon we will have:
a = G*M1/(60RE)^2 = (G*M1/(RE)^2) *(1/60^2)
Here the term in the left is equal to g, so we have:
(G*M1/(RE)^2) *(1/60^2) = g*(1/60^2)
So the centripetal acceleration of the moon is 60^2 = 3600 times smaller than g.
Draw the incident ray so it is longer than the reflected ray.
Make the angle of reflection and the angle of incidence equal.
Switch the labels for incident ray and reflected ray.
Make the angle of incidence larger than the angle of reflection.
Answer:
Make the angle of reflection and the angle of incidence equal.
Explanation:
The law of reflection states that at the point of incidence on a smooth surface, the angle of incidence is equal to the angle of reflection, The incident ray, the normal and the reflected ray lie on the same plane.
Answer:
B. Make the angle of reflection and the angle of incidence equal
Explanation:
The addition of heat energy to a system always causes the temperature of that system to increase. This is always true because you are adding heat of a substance to increase its temperature. For example, you are going to drink a cup of coffee. And you wanted it hot to boost your attention. So you have to use hot water. In order for your water to become hot or warm, you need boil it in a kettle. Note that you are going to use an electric stove. The electric stove gets it energy from the source giving it a hotter temperature to the water in the kettle. You are applying heat energy to warm the water. So, the statement is true.
Answer:
A
Explanation:
the big paragrah
The microphone changes the mechanical energy of the sound wave into electric energy.
Answer: The kinetic energy of the ball at the maximum height is zero.
Explanation -
As per the question, the ball is moving vertically upwards. Every time it's velocity will decrease and it becomes zero at the maximum height.
Whole of ball's initial kinetic energy is converted into potential energy at maximum height.
Thus we can conclude that the kinetic energy is zero at the maximum height.
A 0.145 kg baseball is thrown from a platform above the ground at a 10 m/s. The ball is moving 15 m/s when it strikes the ground. From what height above the ground was the ball thrown?
b.The rate at which charge flows
c. The ability for something to have a charge flow
d.The potential for a charge to flow