Yeah Question 13 of 20 A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
A. 39,200 J
B. 408 J
C. 2J
D. 7,840,000 J

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.