The gas in the balloon has a mass of 0.032 kg. The balloon has a volume of 0.025 m3. Calculate the density of the gas in the balloon.

[2 marks]

You have been mining for gold and you have found a nugget and are about to be rich. The density of gold is 19.3 grams/cubic centimeter or g/cc. Your sample has a mass of 972 grams and is nearly a perfect cube, each side measuring 3 cm.

What type of device is a car engine? A. A heat pump that uses heat to do work B. A heat engine that uses work to move heat C. A heat pump that uses work to move heat D. A heat engine that uses heat to do work

What forces would act on a block if it was sitting on the table?

A 2-HP winch is used to raise loads of bricks up a 30 meter building. If the bricks need to get to the top of the building in 2 minutes, what is the maximum allowable mass of a load of bricks?

When is a circuit considered an open circuit?

According to the Big Bang theory timeline, all matter and energy was compressed into a very small volume at an extremely high temperature. a. True b. False

Sal is thinking about making a positive change in his life. But there are risks involved. Which is the healthiest way that Sal can approach these risks?

The push of energy given to electrons in a circuit is known as what?

How many calories would you burn if you walked for 120 minutes at a pace of 3-mph?

What force oppose other forces and slow objects down?