Meg lifted a box of books with a mass of 20 kg from the floor to a shelf 1.4 m off the ground. The applied force was equal to the weight of the box of books. How much work did Meg do?

What two factors cause change in seasons

This is the angle at which light leaves or bounces off of a surface relative to the normal

A flashing red traffic light at an intersection means

Which single advantage/disadvantage from the table on the previous page is most important to you

A satellite orbits earth in a circular orbit. Does Earth's gravity do work on the satellite? Explain.

What is the fundamental unit for measuring mass in the metric system?

Why are some craters on the moon bigger than others

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array - or link-based) needs testing?

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.