The elevator of a large building is to raise a net mass of 400 kg at a constant speed of 12 m/s using an electric motor. minimum power rating of the motor should be

Select the correct answer. Two charged objects, A and B, exert an electric force on each other. What happens if the distance between them is increased? O A. The charge on B decreases. OB. The charge on B increases. OC.

A rocket fires two engines simultaneously. One produces a thrust of 725 N directly forward, while the other gives a 513-N thrust at 32.4° above the forward direction. Find the magnitude and direction of the resultant force acting on the rocket.

How much energy is needed to change the temperature of 50.0 g of water at 15.0 degrees?

For a projectile launched from the vertically from the surface the earth with initial velocity v0, the velocity of the projectile when at distance r from the center of the earth satisifes the equation: v^2 =

The speed of a light wave in a certain transparent material is 0.6310.631 times its speed in vacuum, which is 3.00*108 m/s3.00*108 m/s. When yellow light with a frequency of 5.15*1014 Hz 5.

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series