What is the fate of the electrons that interact with a specimen in an electron microscope?

What is work done by a person in moving a block of mass 2kg on a frictionless floor up to a distance of 5m?

How many days will it take for one half of the original amount of a radioactive substance to decay if the half-life is 30 days? a. 3 days b. 15 days c. 30 days d. 60 days

Suppose our sun had 4 times its present mass but the earth orbited it at the same distance as it presently does. What would be the length of the year on the earth under those conditions? A. 1/2 as long as the present yearB.

When you encounter a yellow light as you approach an intersection what is the safest approach to take?

Which car has the most kinetic energy? A car of mass 1500 kg with speed 5 m/s or A car of mass 1300 kg with speed 3 m/s or a car of mass 1200 kg with speed 2 m/s or a car mass 1400 kg with speed 4 m/s

A person riding on the roof of a freight train throws a ball forward. (a) If we ignore air drag and relative to the ground, is the ball moving faster or slower when the train is moving than when it is standing still?

Determine which factors will increase the reaction rate and which factors will decrease te reaction rate.

Read the paragraph below from the section "An Object At Rest Has Potential Energy Potential energy is the energy an object rgy is the energy an object has because of its position. It is energy that is waiting to be released.

Briefly describe the history of the metric system as it applies to the meter and how the definition of a meter has changed over time.

Visible light is an example of?