Physics, 18.02.2020 18:47, nathanbarbry
This is a picture of a little hill along a road, just a little rise in the pavement. If you don't drive so very slowly, you feel a little lighter, a little "lifted" in your seat as you go over the top of it. (If you drive too fast, you spend a moment in the air!) A. First, without doing any calculations, explain why you feel lifted in your seat. B. Now we're going to come up with an estimate of how much lighter you feel. Suppose the hill is approximately shaped like an arc of a circle that has a radius of 20m. Find the magnitude of the force the seat exerts upward on you, as the moment you're at the top of the bump, expressed as a percentage of your weight.
Answers: 2
Physics, 22.06.2019 09:30, looloo273
Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.
Answers: 2
Physics, 22.06.2019 15:50, rosepetals2938
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
Physics, 23.06.2019 01:40, hinacat87
When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.
Answers: 3
This is a picture of a little hill along a road, just a little rise in the pavement. If you don't dr...
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