How does a transmission electron microscope work?

Two carts with masses of 4kg and 3kg move toward each other on a frictionless track with speeds of 5.0m/s and 4.0 m/s respectively. The carts stick together after the colliding head on. Find the final speed of the carts.

A 0.153 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.700 m/s. It has a head-on collision with a 0.308 kg glider that is moving to the left with a speed of 2.16 m/s. Suppose the collision is elastic.

Cotton balls could be used to represent clouds because of their white color and appearance of texture. Which of these other things could be modeled using cotton?

Which of the following does each different kind of atom represent?

What is true about valence electrons? They are those electrons that are closest to the nucleus They are those electrons that are neutrally charged They are those electrons that are found in the nucleus They are those electrons that are furthest from

Floating in deep space, you find yourself at rest next to a small asteroid. You reach out and tap the asteroid with a hammer. What happens to you in this process?

You walk forward at 1.5 m/s for 8s. Your friend decides to walk faster and starts out at 2.0 m/s for the first 4 s. Then she slows down and walks forward at 1.0 m/s for the next 4s. Make a distance-time graph of your motion and your friend's motion.

If the coolant in a refrigerator was not compressed back into a liquid after it flowed through the refrigerator what would happen

A electric model train travels at 0.339 m/s around a circular track of radius 1.75 m. How many revolutions does it perform per second, i. e, what is the motion's frequency?

Which characteristic best describes how nuclear decay differs from nuclear fission?