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An electron moving perpendicular to a uniform magnetic field of 0.22 T moves in a circle with a speed of 1.5x107 m/s. What is the radius of the circle? (e=1.6x10-19 C, melectron= 9.11x10-31 kg)
A ship sails from seawater (specific gravity 1.025) into freshwater and therefore sinks slightly. find the combined mass of the ship and cargo before it was unloaded
Two events are observed in a frame of reference S to occur at the same point, by the second event occurring after a time of 1.7 s. In a second frame S' moving relative to S, the second event is observed to occur after a time of 2.25s. What is the dis..
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. If the ball was moving horizontally when it was caught, how fast was the ball travelling
At time t=0 a proton is a distance of 0.360 m from a very large insulating sheet of charge and is moving parallel to the sheet with speed 990m/s. What is the speed of the proton at 5.00×108s
A 3 centimeter tall statue is 48 centimeter in front of a convex lens having a focal length of magnitude 20 centimeter. Determine is the image of the statue real or virtual
In seawater, a life preserver with a volume of 4.00×10?2m^3 will support a 72.0kg person (average density 980kg/m^3 ), compute the density of the material composing the life preserver
A copper ball with a radius of 1.4 centimeter is heated until its diameter has increased by 0.21 millimeter. Assuming an initial temperature of 22°C, evaluate the final temperature of the ball
The radii of curvature of the surfaces of a thin lens are +10cm and +30 cm. The index is 1.50. Compute the position and size of the image of an object in the form of an arrow 1 cm high, perpendicular to the lens axis, 40 cm to the left of the lens..
A 70.0kg archer, standing on frictionless ice, shoots a 100g arrow at a speed of 50m/s. What is the recoil speed of the archer
An RLC circuit has a resistance of 2 komega, a capacitance of 32 uF, and an inductance of 52 H. obtain the phase shift between the current and the voltage
A block of mass 8.4 kg is pulled along a horizontal frictionless floor by a cord, What is the magnitude of the normal force exerted on the mass by the floor
Three resistors having resistances of 1.20 ohm, 2.50 ohm , and 4.60 ohm are connected in parallel to a 25.0 V battery that has negligible internal resistance. Find the equivalent resistance of the combination.
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