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Questions in physics

[Answered] An elevator weighing 6,000 N moves up a distance of 10.0 meters in 30.0 seconds. a. How much work did the elevator’s motor do? b. What was the power of the elevator’s motor in watts and in horsepower?

[Answered] Explain why diesel engines don't use spark plugs.

[Answered] The mass of cart 1 is 1.10 kg, and the mass of cart 2 is unknown. The carts were placed next to each other, and a spring was activated, causing them to move away from each other. The recorded velocities are as follows: - Cart 1: [tex]v_1 = 0.75 \, \text{m/s}[/tex] - Cart 2: [tex]v_2 = 0.34 \, \text{m/s}[/tex] What is the mass of cart 2?

[Answered] Convert 56.0 kg into pounds (lb).

[Answered] What is the mass of an object that requires a force of 4,500 N to accelerate it at a rate of 5 m/s²?

[Answered] What conditions must exist for a force to do work on an object?

[Answered] You ride your bike for a distance of 30 km. You travel at a speed of 0.75 km/minute. How many minutes does this take?

[Answered] A marble statue has a mass of 6,200 grams and a volume of 2,296 cm\(^3\). What is the density of marble?

[Answered] A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find: 1. The distance the object moved. 2. The power of the machine.

[Answered] A 400 kg object is sitting at rest at the top of a hill that is 30.0 m high and 80.0 m long, measured along the hill. If there is no friction, how fast will the object be going at the bottom of the hill?