Where does the name "Black Hole" get it's name?

A child is pushing a shopping cart at a speed of 1.5 m/s. How long will it take this child to push the cart down an aisle with a length of 9.3 m?

Graphs are representations of equations. A. True B. False

Infrared radiation has frequencies from 3.0*1011 to 3.0*1014 Hz, whereas the frequency region for microwave radiation is 3.0*108 to 3.0*1011 Hz. (higher than, lower than, or the same) We can say that:1.

How to find a total resistance of the circuit

Nikolas had an idea that he could use the compressed carbon dioxide in a fire extinguisher to propel him on his skateboard. Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg.

what is a possible unit for the product VI, where V is the potential difference across a resistor and I is the current through the same resistor?

In old western movies, cowboys often would put their ear to a train track to listen for an oncoming train. What benefit would this method provide over listening for a train by listening for sound through the air? A) The sound would be louder.

What is meant by "reflecting" and "refracting" telescopes?

How would you find the speed of a ball thrown in to the air - it takes 6 seconds to get tho the top. The height is not given.

If your vision somehow began to increase so that you could see higher and higher frequencies beyond visible light, what type of wave would you be able to perceive first?