If a 100Ib women walks up a flight of stairs to get to the top of a 100 meter building. How much work did she perform?

The difference between scalar and vector

Which object has the greatest amount of kinetic energy? a. a truck (F-150) moving at 100 mph b. a truck (F-150 moving at 90 mph c. both trucks have the same kinetic energy d. Neither. Both trucks only contain potential energ

Battery life is what distinguishes one type of mobile computer from another.

An airplane is flying horizontally with speed 1000 km/h (280 m/s) when an engine falls off. Neglecting air resistance, assume that it takes 30 s for the engine to hit the ground. (a) Show that the altitude of the airplane is 4.4 km. (Use g = 9.

A comet is approaching Earth. Describe Earth's gravitational pull as the comet gets closer to it.

Explain what each of the following scientists contribute to the atomic theory

A fully charged parallel-plate capacitor remains connected to a battery while a dielectric is slid between the plates. Do the following quantities increase, decrease, or stay the same? Select one or more: a. delta V increases b.

Energy is observed in two basic forms: potential and kinetic. Which of the following correctly matches these forms with a source of energy? a. the heat released from a living organism: potential energy b.

What should you do when operating a boat in large waves and high wind?

A planetary nebula forms when the outer layers are expelled from which type of star?