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A 0.145 kg baseball pitched at 45.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is 2.00 10-3 s, calculate the average force between the ball and bat during contact. N
When point charges q1 = +7.0 ?C and q2 = +6.6 ?C are brought near each other, Determine the distance between the charges
Given two vectors A? = 4.00 i^+ 7.80 j^ and B? = 5.60 i^? 2.00 j^ , find the scalar product of the two vectors A? and B?. Find the angle between these two vectors
q1. a power supply passing through a resistor is supposed to deliver 22-v dc at a max current of 150ma. the
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
A floodlight with a mass of 46.00 kg is used to clarify the parking lot in front of a library. The floodlight is supported at the end of horizontal beam that is hinged to a vertical pole. A cable that makes an angle of 29 degrees with the beam is att..
A car crashes into a wall at 25 m/s and is brought to rest in 0.1s. Calculate the average force exerted on a 75-kg test dummy by the air bags
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1230 Hz. The bird-watcher, however, hears a frequency of 1260 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
On a banked race track, the smallest circular path on which cars can move has a radius of 111 m, while the largest has a radius 153 m, Find the smallest speed at which cars can move on this track without relying on friction
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
A cell membrane is composed of lipid molecules and is approximately 18 nm thick, what is the approximate capacitance of a spherical cell that has a diameter of 20 m?
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. If the outer radius is 1.39 cm, how fast does the hanging mass rise
Omega resistor using a voltmeter having an internal resistance of 10.0 Omega. Elucidate what is the potential difference does the voltmeter measure across the 5.00 Omega resistor?
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