It takes Δt time to travel the Em wave which is on top of the microwave to bottom of the microwave.
Δt = h/c
P = E / Δt = cE/h
P = 3× 10⁸ ₓ 0.5 10⁻⁶ / 0.25
600w.
Answer:
When the bat hits the ball, it exerts some force on the ball. Just think about a home run hitter hitting a stationary ball. How far do you think it will go? Will it go more than 400 ft.? Probably not. While the kinetic energy transferred from the bat to the ball accounts for some energy of the ball, it does not account for all. Where is the mysterious energy coming from?
The answer is conservation of momentum. I just said momentum is conserved but how do I know that? I know that because of Newton's 2nd law: F=ma (Force equals mass times acceleration)
Conservation of momentum means that the harder you throw you, the harder the ball will bounce back at you. That is the reason it is easier to hit a home run on a fast ball than a curveball.
Conservation of momentum also means that the bat can transfer some of its momentum to the ball. This is why it is better to use a heavier bat if you swing just as fast. The momentum is the product of the mass and velocity, so to make it easier to understand;
a heavier bat swung at the same speed as a lighter bat will have more momentum.
Answer:
D
Explanation:
At noon on the summer solstice. The sun dagger was used to observe astrological readings in the ancient time
Wind can be helpful by spreading plant seeds so they can grown in other areas
Answer:
Mantle layer
Explanation:
The convection of the mantle layer is when energy in the form of heat is transferred from the interior of the earth to the top of the planet, creating convection currents.
This convection in the mantle causes movements in the earth's tectonic plates, which are found in the lithosphere, so the <u>movement of Eath's lithosphere is caused by convection within the mantle layer on the earth</u>. This plate movements can cause earthquakes or volcanic eruptions.
