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?

A 1.00*1 0 2 g aluminum block at 100.0°C is placed in 1.00*1 0 2 g of water at 10.0°C. The final temperature of the mixture is 26.0°C. What is the specific heat of the aluminum? CA = (-mBCB∆TB) / mA∆TA

The fm station kdul broadcasts music at 99.1 mhz. find the wavelength of these waves (c = 3.0 * 108m/s).

Which of these statements best explains why the difference between summer and winter temperatures is greatet in Russia thanin FL

Which stage of Erik Erikson's psychosocial theory of personality is the first one and occurs during infancy?

Winds are the main cause of ___ currents in the ocean

Electric forces can be either repulsive or attractive, whereas gravitational force is always:

Which describes why the magma moves in the direction of the arrows? A The magma is cooled and becomes more dense by the core moving it toward the crust. B The magma is heated and becomes more dense by the core moving it toward the crust.

Determine the difference in the speed of sound in hydrogen at 0 degrees Celsius and in air at 30 degrees Celsius. Also indicate if is it faster or slower

A small car and a large truck are driving down a highway, which statement would support the premise that the truck has more momentum? A) A large truck has a much larger mass. B) A car has a smaller engine than a truck.

Is there a dark side of the moon? (note: this question can be effectively answered either yes or no, so it is important to explain your reasoning?