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Physics

A blank reaction occurs when a substance, usually containing carbon, reacts with oxygen to produce energy in the form of heat and light.

Does a seagull sitting on top of a fence have kinetic energy

Which two temperature scales are commonly used in the United States?

An object of mass 30kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object.

A 500-kg roller coaster car travels with some initial velocity along a track that is 5 m above the ground. The car goes down a small hill and then coasts back up a higher hill. The second hill is 12 m above the ground. What must the initial velocity of the car be for the car to be going 3 m/s at the top of the second hill?

An object has a weight of 950 Newtons, what is its mass? Round to the nearest tenth (one place after the decimal).

surveyor is using a magnetic compass 8.3 m below a power line in which there is a steady current of 120 A. (a) What is the magnetic field in microteslas at the site of the compass due to the power line? (b) Will this field interfere seriously with the compass reading? The horizontal component of Earth’s magnetic field at the site is 20 µT.

You're in an airplane that flies horizontally with speed 1100 km/h (300 m/s ) when an engine falls off. Neglecting air resistance, assume it takes 26 s for the engine to hit the ground.Find the height of airplane.

What is the density in Mg/m^3 of a substance with a density of 0.14 lb/in^3? What is the velocity in m/s of a vehicle traveling at 70 mph?

A pilot drops a bomb from a plane flying horizontally with constant velocity. When the bomb hits the ground, the horizontal location of the plane will

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