A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. How much power was used?

Which of the following balances is affected by the local force of gravity? A) Beam balance B) Analytical balance C) Spring balance

Explain in your own words how chlorophyll makes a leaf look green

Helium is less than the elements that make up the air we breathe, so a balloon filled with helium will float in air.

Is it true that newtons laws of universal gravitation states that every object in the universe attracts every other object

A force 1500 n to a 100 kg car. what is the acceleration of the car

a motorcycle begins at rest and accelerates uniformly at 7.9 m/s2. We want to find the time it takes the motorcycle to reach a speed of 100 km/h. Which kinetic formula would be most useful to solve for the target unknown?

When a covalent or an ionic bond is formed a chemical change has occurred. Which of these is not associated with a chemical change? A) The atoms of the substance produced have been rearranged.

Two 8 ohm resistor in parallel

After a quick review of the textbook, rank the following elements in order of increasing density: (A) copper, (B) nickel, (C) titanium, (D) silicon.

How much power is expended if you lift a 60 n crate 10 meters in 1 second? a. 0 w b. 6 w c. 10 w d. 60 w e. 600 w?