If an object has a mass of 40 kg, what is its weight at Earth's surface?

A 0.2 kg plastic cart and a 20 kg lead cart can both roll without friction on a horizontal surface. equal forces are used to push both carts forward for a distance of 1 m, starting from rest.

The efficency of a practical machine is less than 100% why?

3. You are walking in Paris alongside the Eiffel Tower and suddenly a croissant smacks you on the head and knocks you to the ground. From your handy dandy tourist guidebook you find that the height of the Eiffel Tower is 300.5 m.

If a bike rider travels 4 km in an hour, what is his speed measured in miles per hour?

Assuming the same current is running through two separate coils, why is it easier to thrust a magnet into a wire coil with one loop than one with four loops?.

When a car turns a corner on a level road, which force provides the necessary centripetal acceleration? 1) gravity 2) normal force 3) air resistance 4) tension 5) friction

Use Newton's universal law of gravitation to explain why gravity is greater on Earth than on Mercury.

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs