Why does convection occur only in fluids?

Junior slides across home plate during a baseball game. If he has a mass of 115 kg, and the coefficient of kinetic friction between him and the ground is 0.35, what is the force of friction acting on him?

Calculate the potential energy of a rock with a mass of 55kg while sitting on a cliff that is 27m high

A toy train is traveling along a circular track at a constant speed of 1.0 m/s. The acceleration of the train is found to be 4.0 m/s2 . What is the radius of the track?

Which type of receptor is involved in rapid responses of muscle cells and neurons?

What substance does rock behave like when it is exposed to extreme temperature and pressure?

Which type of electromagnetic waves have longer wavelengths that the waves that make up visible light.

A charge of 11 mu or micro CC is 10 cm above the center of a square of side length 20 cm. Find the flux through the square.

A 12.0 khz, 16.0 v source connected to an inductor produces a 4.00 a current. what is the inductance?

The personal cost per smoker per year is estimated to be $2,500.

A tight rope walker traverses a wire with the aid of a balancing pole. The moment of inertia of the person about their COG (Iperson) is 15 kg m^2. The moment of inertia of the pole about its COG (Ipole) is 250 kg m^2.