How is velocity different from speed

You are designing a lathe motor, part of which consists of a uniform cylinder whose mass is 130 kg and whose radius is 0.40 m that is mounted so that it turns without friction on its axis, which is fixed.

How do you figure out how many kilowatt hours are being used?

What is energy at motion called

A researcher plans to conduct a study to compare two groups. Based on previous research, she anticipates a medium effect size. She does a power analysis with alpha level of. 05. This power analysis tells her.

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=42500 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical.

How does changing depth affect water pressure

The mass of a rigid rod is 0.60 kg and its length is 39.0 cm. Calculate the moment of inertia (in kg · m2) for the rod if it is pivoted about an axis through the center of mass of the rod. (Assume the axis is perpendicular to the rod.

Does a rolling basketball have kinetic energy

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

What happens to particles when a substance gains energy and changes state?