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A volleyball is sent over a net, having been launched at a speed 2.4 m/s at an angle 30 degrees above the horizontal, from the grou d. What is the balls speed, in m/s, 1.26 seconds after being launched?
A coherent beam of 1.937 eV photons is incident on a double slit. A screen is L = 1.8 m away from the source and the width of each slit is a = .010 mm. What would the kinetic energy of one of these electrons have to be
An electron moves with a speed of 5.0 x 10^4m/s perpendicularto a uniform magnetic field of .20T. What is the magnitude ofthe magnetic force on the electron
What is the speed and total energy of an electron whose kinetic energy is 3 times its rest energy
A 1x10^2-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.25. What must be the magnitude of, so that the net work completed by it and the kine..
An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.160 cm. V (b) Calculate the electric potential VB at point B, x = 0.170 cm. V What is the potential difference VB - VA? V
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
The wheelbase on a truck is 2.4 m wide and the truck's center of mass is located along the vertical centerline of the truck and 2.0 m above the bottom of the tires
A crate whose mass m is 360 kg on the bed of a truck that is moving at 120km/h. What force (assumed constant) acts on the crate during this time
find the coefficient of kinetic friction between a 4.3- block and the horizontal surface on which it rests if an 80
You are arguing over a cell phone while trailing an unmarked police car by 25.0 m; both your car and the police car are traveling at 120 km/h. What is the separation between the two cars when your attention finally returns
If you run the wire between the poles of a strong horseshoe magnet, subjecting 5.00 cm of it to a 1.75 T field (perpendicular to the wire), what force is exerted on this segment of wire
A meniscus lens is concave on one side and convex on the other. Find the refractive power (diopters) of a meniscus lens
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