Copper has a density of 8900kg/m³. Calculate the mass of 2.8m³ of copper in kilograms.

Which of the following is an example of plasma? A. the atmosphere of stars B. The vapor of super heated water C. The super hot material released from a volcano D. Clouds in our sky

A 20 N unbalanced force causes an object to accelerate at 1.5 m/s2. What is the mass of the object?

A 60kg skateboarder starts up a 20° slope at 5m/s then falls and slides up the hill on his knee pads. The coefficient of kinetic friction between his knee pads and the ramp is 0.30. How far does he slide befor stopping?

A sports car is travelling at a constant velocity v = 5.00 m/s. The driver steps on the gas, and the car accelerates forward. After 10.0 seconds, the driver stops accelerating and maintains a constant velocity v = 25.0 m/s.

What do elements in the same column of the Periodic Table usually have in common? A. same number of electrons in their outer shells B. same atomic number C. same number of electron shells D. same atomic mass

An opera singer in a convertible sings a note at 700 hz while cruising down the highway at 83 km/h. the speed of sound in the air is 343 m/s. part a what is the frequency heard by a person standing beside the road in front of the car?

Which region of the early universe was most likely to become a galaxy?

A cyclist is riding his bike at a constant speed of S m/s, and experiences a frictional force between the bike and sidewalk of 100 N.

If a magnet is cut in paris what will be its north and south pole

How does the addition of sodium carbonate affect the cost of producing glass?