Which of the following are not marsupials? a. kangaroos. c. opossums. b. koalas. d. echidnas.

An insulated rigid tank contains 4 kg of argon gas at 450 kpa and 30°c. a valve is now opened, and argon is allowed to escape until the pressure inside drops to 200 kpa.

A blank is the small number to the lower right of the chemical symbol. It tells how many atoms of the element are present in the blank

A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration?

How does fresh water enter the ocean

A bike rider does work to get to the top of a mountain. How could you use the law of conservation of energy to describe his trip down the mountain? The rider uses energy to do work going up the mountain.

Which of the following is an example of applied research?

A Cadillac Escalade has a mass of 2,569.6 kg, if it accelerates at 4.65 m/s^2 what is the net force on the car?

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?

A car travels 300 km in the first 3 hours of a trip. Then it hits traffic and travels only 60 km during the last hour. What is the average speed of the car? a.) 180 km/h b.) 100 km/h c.) 90 km/h d.) 120 km/h

What is the purpose of using a wedge? A. separates objects B. keeps objects together C. allows you to exert force over a distance