A 2.1W iPod is used for 30 minutes. How much energy does it use?

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

What causes the development of most clouds and precipitation in the atmosphere?