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An astronaut who is repairing the outside of her spaceship accidently pushes away a 98.9-cm-long steel rod, which flies off at 10.5 m/s, never to be seen again. As it happens, the rod is oriented perpendicularly to the magnetic field in that region of space and moves perpendicularly to its length. The magnetic field strength there is 6.93 mT. What is the magnitude of the EMF, in millivolts, induced between the ends of the rod?
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
a batter hits a fly ball which leaves the bat 0.88m above the ground at an angle of 62 with an initial speed of 29m/s heading toward centerfield. how far from home plate would the ball land if not caught
The equations of force and motion objective questions.
The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
The position of a particle is given by x = 4.4 cos pt, where x is in meters and t is in seconds. Find the speed and acceleration of the particle when x = 2.3 m
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 69.0. Find the angle the resultant force makes with the rope of dog A
A man uses a tire iron to loosen his lug nuts. The tire iron is 25cm long. The man applies a force of 30N at an angle of 29° to the iron. What is the torque that is applied to the lug nut
if the magnitude of the total acceleration of the car's mass center is the same at B as at A, compute the radius of curvature of the dip in the road at B
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom, of area 2.50m^2 , exerted by the water and air inside the tank and the air outside the tank
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.650m from the axis of rotation of the stool. What is the initial angular momentum of the system
During a do-it-yourself roof repair project, you are on the roof of your house and accidentally drop your hammer, What is the horizontal distance traveled by the hammer between the instant it leaves the roof and the instant it hits the ground
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