The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed

Niobium has a density of 8.57 g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a niobium atom.

You serve a volley ball with a mass of 1.5 kg. The ball leaves your hand at 15m/s. The ball has how much kinetic energy?

A person pulls a toboggan for a distance of 13.2m along the snow with a rope directed 31 degree above the snow then tension in the rope is 95N how much work is done on the toboggan by the tension force

What effects a materials resistance

Parallel circuits are most likely to be used in which of the following? a flashlight holiday light strings a calculator a house

51 Mm is how many km?

What type of change occurs when water changes from solid to a liquid

Definition of artficial and natural radioactivity

In order for an object to conserve it's total mechanical energy it is absolutely necessary that?

Your body is presently converting chemical potential energy from food into thermal energy at a rate of about 100 J/s, or 100 W. If heat were flowing out of you at a rate of about 200 W, would your body temperature go up or down?