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The attractive electrostatic force between the point charges 7.14×10?6 and has a magnitude of 0.825 when the separation between the charges is 5.83. find the sign and magnitude of the charge Q.
An electric motor turns a flywheel by a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel. The flywheel is a solid disk with a mass of 50.0kg and a diameter of 1.00m.
Suppose an asteroid is found that appears to be heading directly toward Earth (using Earth's location at the time of discovery). It is 4.2 A.U. away (i.e., 4.2 times the Earth-Sun distance), and travelling through the Solar System with a speed of ..
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
A block is given an initial velocity of 5 m/s up a frictionless 20 ° incline. How far up the incline does the block slide before coming (momentarily) to rest.
A 258-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.980, and the log has ..
The total volume of the column of water in the neck is 0.200 m^3. Illustrate what is the magnitude of the force exerted by the water on the bottom of the container?
Two cars with equal mass collide head on. One car is going 18 mph. That car is push backward about 38 feet. What is the speed of other vehicle.
A violin string of length 35 cm and mass 1.1 g has a frequency of 478 Hz when it is vibrating in its fundamental mode. What is the wavelength of the standing wave on the string
Two point charges q1 = 3.40 nC and q2 = -5.50 nC are 0.100m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2. Take an electric potential to be zero at infinity.
Suppose a heat engine takes in 420 J of energy from a hot reservoir and performs 30 J of work in each cycle.
A 100 kg crate is being pushed across the horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.230. What must be the magnitude of, so that the net work completed by it and the kinetic..
Having grown tired of hearing loud music from passing cars at 3 am and the boisterous yelling of bar patrons at closing, If her new home is 2.8 km from the freeway, what's the intensity level there
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