What is the normal force of a 0.0037 kg tennis ball rolling at a constant speed of 3 m/s across a desk?*

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.