Show the moment of force is dimensionally equivalent to work

Why is too much exposure to ultraviolet radiation dangerous

This is heat or electrical transfer by contact.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

An external resistor with resistance R is connected to a battery that has an emf E and an internal resistance r. Let P be the electrical power output of the source. By conservation of energy, P is equal to the power consumed by R.

When there is a change of state, such as a solid to liquid or liquid to gas, heat energy can be added without a temperature change because A) the added energy is not needed. B) the energy is lost to the system.

A worker pushes horizontally on a large crate with force of 298 N and the crate is moved 4.3 m. How much work was done?

What would happen to the volume of a ballon left on a sunny window sill and which gas law pridict this result

An open-topped freight car with mass 24,000 kg is coasting without friction along a level track. It is raining very hard, and the rain is falling vertically downward. Originally, the car is empty and moving with a speed of 4.00 m/s.

Photons travel outward from a light bulb in

The critical angle for a beam of light passing from water into air is 48.8°. this means that all light rays with an angle of incidence in the water that is greater than 48.8° will be