What does critical mass depend on

On a banked race track, the smallest circular path on which cars can move has a radius of 120 m, while the largest has a radius of 151 m, as the drawing illustrates. The height of the outer wall is 10.4 m.

A cat with a mass of 5 kg sits on a branch that is 26 m off the ground. What is its gravitational potential energy? The acceleration of gravity is 9.8 m/s2 A. 872 J B. 1274 J C. 638 J D. 244 J

How does a ferromagnetic rod inside a solenoid affect the strength of an electromagnet

According to the diagram, in order for a solar eclipse to occur, the Earth, Moon, and Sun must A) form a right angle with the Moon in the middle. B) form a straight line with the Moon in the middle. C) form a right angle with the Earth in the middle.

Equilibrium of Non-Concurrent Forces Lab 1. What are the two conditions for equilibrium of a rigid body? How would this experiment demonstrate their validity? 2.

You have a horizontal grindstone (a disk) that is 85 kg, has a 0.31 m radius, is turning at 88 rpm (in the positive direction), and you press a steel axe against the edge with a force of 21 N in the radial direction.

Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

Applied force is the force of support exerted by an object that holds up another object. True False

Calculate the gravitational force on the washers using the formula F = ma where a = 10 m/s2 and m is the mass of the washers. Use the mass of the washers in kilograms. Record your calculations, to no more than three decimal places, in Table D.

Why does it take 10 times more energy to grow a kilogram of beef than a kilogram of wheat?