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a) A stationary proton is accelerated through a potential difference of 2.5 kiloVolts. Find its subsequent velocity in m/s.
b) The proton is next sent through 2 oppositely charged parallel metallic plates having a potential difference of 250 V. Find the absolute value of the B- field that must be applied perpendicular to the plates to keep the proton on a straight line as it passes through the plates.
How long will the energy in a 340 kcal cup of yogurt last in a woman doing work at the rate of 180 W with an efficiency of 20.0%
A bicyclist starts at rest at the top of a 50.3m long hill. After a small push, he coasts speeding up with an acceleration of 3.43m/s2 due to the slope of the hill. What is the angular velocity of the bicycle tires at the bottom of the hill.
When connected in series to a 110-V line, two resistors use one-fourth the power that is used when they are connected in parallel. what is the resistance of the other
The gravitational acceleration at the surface of a planet is 18.5 m/s2. Find the acceleration at a height above the surface equal to half the radius of the planet.
A hoop and a disk, both of 0.66- m radius and 4.0- kg mass,are released from the top of an inclined plane 3.1 m high and 8.9 mlong. What is the speed of each when it reaches the bottom? Assume that they both roll without slipping.
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. At what height from the ground will the two objects first meet
a thin rod of length 0.75 m and mass 0.40 kg is suspended freely from one end. it is pulled to one side and then
A student sitting on a frictionless rotating stool has rotational inertia 0.92kg?m2 about a vertical axis through her center of mass, Ignoring her arm mass, what's her new rotational velocity
If a camera with a 60 mm lens is to resolve two objects that are 3.0 mm from each other and both objects are 4.0 m from the camera lens, What is the resolving power
A canoe is paddled downstream with a speed of 1.9m/s relativeto the water. The river current has an average speed of 1.6m/s. Determine the fly's velocity relative to the river banks
q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more
A jogger runs directly east for 4 km, then turns and goes northwest for 6 km. He then travels directly south for 5 km. How far is he from the starting point?
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