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A rubber ball of mass 24.5 g is droppedfrom a height of 2.05 m onto a floor. The velocity of the ball is reversed by the collision with the floor,and the ball rebounds to a height of 1.30m. What impulse was applied to the ball during the collision?
A 100-coil spring has a spring constant of 380 N/m. It is cut intofour shorter springs, each of which has 25 coils. What is the angular frequency of the motion
a light ray of wavelength 550 nm initially in water enters a transparent substance at an angle of 37 degrees with
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to49 m/s (around 110 mi/h) in a time of 8.5 s.The mass of the car and riders is 5500 kg. Find the average net force exerted on ..
Three boxes are connected by light strings. The force pulling on the third box is 30 N. What is the tension between box 2 and box 3
An alternating source drives a series RLC circuit with an emf amplitude of 6.07 V, at a phase angle of +33.3°. what is the potential difference across the inductor
A box with a mass of 5 kg initially moving at 3 m/s comes to rest in a distance of 9 m. what is the magnitude of the net force acting on the box
A 990.0 g block of wood rests on a tabletop. A 10.0 g bullet is shot straight up through a hole in the table beneath the block. How fast was the bullet going initially
Two identical spheres are placed with centers 0.25 m apart, one is given a charge 20nC and the other-36nC, what will be the electric force each exerts on the other
A satellite is in a circular orbit about the earth (M = 5.98 x 1024kg). The period of the satellite is 3.44 x 104s. What is the speed at which the satellite travels?
The area of a typical eardrum is about 5.0 × 10?5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing. W (b) Calculate the sound power incident on an eardrum at the threshold of pain. W
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
q1. a weight with a mass of 57 kg is suspended from a point near the right hand end of a uniform boom with a mass of 60
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