A 500 g ball swings in a vertical circle at the end of a 1.4-m-long string. when the ball is at the bottom of the circle, the tension in the string is 18 n.

An object moves in a circle. If the mass is tripled, the speed halved, and the radius unchanged then the centripetal force must change by a factor of: 3/2 3/4 9/4 6 12

A lander or orbiter is a kind of artificial satellite

Convert the acceleration of a free falling body 9.8 m/s^2 to ft/s^2

Doing the same amount of work in less time requires more power. O A. True O B. False

How is shooting a shotgun related to newtons third law? why does a rifle have less "kick" then a shotgun?

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?

A major obstacle to developing good human relations is that

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.