How much heat energy is tequired to raise the temperature of 3 kg of copper from 0

A current of 72.4 mA exists in a metal wire. (a) How many electrons flow past a given cross section of the wire in 10.5 min? electrons (b) In what direction do the electrons travel with respect to the current? The magnitude is zero.

An asteroid is hurtling towards Earth with a large amount of kinetic energy. When it enters the atmosphere it creates a small amount of gravitational energy. Once the asteroid hits the Earth, the asteroid breaks apart.

What shape marks the pegasus constellation?

Which sound wave features are being described? The number of wavelengths/time: Distance traveled/time:

After the body has begun shivering, what explains why it would stop shivering?

A carnot engine rejects 80 mj of energy every hour by transferring heat to areservoir at 10°c. determine the temperature of the high-temperature reservoir and the power produced if the rate of energy addition is 40 kw.

When monochromatic light passes through the interface between two unknown materials at an angle θ where 0∘<θ<90∘, no changes in the direction of propagation of light are observed. What can be said about the two materials? A.

An object has a force of 10 newtons from the right and 17 newtons from the left. Once the object starts moving toward the right, an additional force of 7 newtons is applied from the right.

A basketball player, who weighs 600 newtons, jump 0.5 meters vertically off the floor. Calculate her kinetic energy just before hitting the floor. a) 300J b) 3000J c) 9.81m/s^2 d) 0

What are three physical properties of helium