The force constant of a massless spring is 27.0 N/m. A mass of 0.35 kg is oscillating in simple harmonic motion at the end of the spring with an amplitude of 0.45 m. The maximum speed of the mass is:

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Coal contains energy. a. light b. kinetic c. chemical d. mechanical