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A particle with mass m=6.6x10-27 kg and charge q=+2e is moving in a magnetic field. it has a spiral trajectory with a radius of 30 cm. The magnitude of the manetic field is .5t. Find the componant of the velocity of the particle which perpendicular to the magnetic field.
A 0.14 meter string clamped at both ends under a tension of 16 N has a fundamental frequency of 135 Hz. What is the mass density of the string
In a Carnot cycle the area for each transformation corresponds to the following work: (a) isothermal expansion: 31,165 J, (b) adiabatic expansion: 21,517 J, (c) isothermal compression: 24,282 J, (d) adiabatic compression: 21,517 J. Calculate (1) the ..
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. After ? = 2.85 s, a second small object is launched vertically up from the ground with the initial velocity v0 = 40.2 m/s. At what height from the ground will the two objec..
You are pulling your younger sister along in a small wheeled cart. You weight 65.0 kg and the combined mass of your sister and the cart is 35.0 kg. What forces are applying to the ground in order to produce this acceleration
A concave mirror has a radius of curvature equal to 21 cm. Calculate the magnification for each given object distance
a 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 ms directed 25 degrees above the horizontal.
A 3500kg car traveling to the north isslowed down uniformly from an initial velocity of 20m.s by a 6250Nbraking force acting opposite the car's motion. How long does it take the car to come to a complete stop
A block (mass = 2.4 kg) is hanging from a massless cord that is wrapped around a pulley, Find the angular acceleration of the pulley and the tension in the cord
A very long, straight wire carries a current of 0.17 A. This wire is tangent to a single-turn,circular wire loop that also carries a current. The directions of the currents are such that the net magnetic field at the center ofthe loop is zero.
A 157g ball is tied to a string. It is pulled to an angle of 8.00 degrees and released to swing as a pendulum. How long is the string
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him.
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