Molecular Physics | Thermodynamics Answers

an effort force of 200n is applied to an ideal machine to move a 750n resistance a distance of 30cm. what is the mechanical advantage of the machine?

A projectile is fired with an initial velocity of 60 m/sec. Upward at an angle of 30° to the horizontal from a point 80m above a level plain. What horizontal distance will it cover before it strikes the plain?

A basketball of mass 0.0400 kg is dropped from a height of 5.00 m to the ground and bounces back to a height of 3.00 m.

a. On its way down, how much potential energy does the ball lose?

b. On its way back, how much potential energy does the ball regain?

Determine the mass of air in slugs contained in a room whose dimensions are 15 ft x 20ft x 20ft. Assume the density of air is 0.0724 lb/ft3 . 

A planet has a radius of 3500 km and a surface gravity of 3.8 m/s2. what is the mass of the planet

The mean radius of the earth is 6360 km. (a) What is the are of the earth’s surface in square meters?

Square centimeters? Square feet?

150 j of heat energy is required to increase the temperature of a body by 6.0°c , calculate the heat capacity of the body and thus it's specific heat capacity if it's mass is 0.1kg

A block of wood occupies a space 8.00ft long, 4.00ft wide, and 4.00ft high. What is the volume of the

cord in cubic meters.

caculate the linear expansivity of brass of length 120m, that assume a new length of 120.05m when headed through a temperature of 100

For adiabatic ideal gas near room temperature, what fraction of heat supplied is available for external work. If the gas is expanded at a constant pressure? At a constant temperature?