A 65-kg person walks from the ground to the roof of a 100 m tall building. How much gravitational potential energy does she have at the top of the building?

Two objects with masses m1 and m2 are located a distance d apart. If their masses are each doubled and the separation between them is reduced to d/2, by what factor does the gravitational force between them change?

What science tool can you use to pick up tiny objects

A petrol engine that transforms 1000J of chemical potential energy into 300J of kinetic energy, and 700J into wasted heat and sound energy. Calculate the Efficiency. Tysm ppl

The mountains on the Moon were formed by what process?

Determine the pressure acting on a surface of area equal to 2 m2 if the force applied to the surface is 4 N

The greenhouse effect on which planet makes it the hottest planet in our solar system? A. Mars B. Mercury C. Venus D. Jupiter

A periodic wave with wavelength = 1 m has frequency f = 3 Hz. What is the wave's speed?

An example of Repression would be?

What kind of cell is in a dragonfly? A eukaryotic or prokaryotic?

A single-turn circular loop of wire of radius 65 mm lies in a plane perpendicular to a spatially uniform magnetic field. During a 0.10 s time interval, the magnitude of the field increases uniformly from 350 to 650 mT.