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Question1
Though you are sitting on a park bench with your friend, you take hold of his hat and start running in a straight line away from him. Over the first 53.3m, you accelerate at 1.00m/s^2 up to your most running speed. You then continue at you greatest running speed for 5.73s more before your friend catches you. How far from the bench did you find before being caught? How long did it take for your friend to grab you?
Question2
A small steel ball bearing with a mass of 12 g is on a small compressed spring. When intended vertically and suddenly released, spring sends the bearing to a height of 1.33 m. compute the horizontal distance the ball would travel if the similar spring were aimed 39.0 deg from the horizontal.
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state
A man pushes a lawn mower on a level lawn with a force of 187 N. If 51 percent of the force is directed horizontally, how much work is completed by the man in pushing the mower 7.0 m.
A 206 kg cart runs into the rear end of a 102 kg cart that is stationary. What is the speed of the moving cart before the collision
A 60-power refracting telescope has an eyepiece with a focal length of 5.5cm. How long is the telescope
questiona person bending forward to lift a load with his back rather than with his knees can be injured by large forces
what is the thermal kinetic energy in 1kg of oxygen gas at 20 degrees celsius? What fraction of this energy is translational
A 19.00kg lead sphere is hanging from a hook by a thin wire 3.40m long, and is free to swing in a complete circle. What must be the minimum initial speed of the dart
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car with respect to the bus?
One generator uses a magnetic field of 0.15 T and has a coil area per turn of 0.050 m2. What magnetic field should be used in the second generator, so that its peak emf is the same as that of the first generator
A particle of mass 0.500 kg is attached to the 100-cm mark of a meterstick of mass 0.200 kg. Calculate the angular momentum of the system
Two electric dipoles with charges +Q, where Q = 5 mC, Find the magnitude of the electric force between the two dipoles.
The forklift and operator have a combined weight of 10000 lb and a center of gravity at G. Find the maximum vertical acceleration given to a pipe, and the normal reactions acting on the wheels.
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