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A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.771 g, q = 4.15 µC is located on the x axis at x = 18.2 cm, moving with a speed of 36.7 m/s in the positive y direction. For what value of Q (in µC) will the moving particle execute circular motion? (Neglect the gravitational force on the particle.)
A passenger on a Ferris wheel moves in a vertical circle of radius R=2.0 m with a constant speed v. Draw a free-body diagram, and find the upward force the seat applied to her at the top of the circle
The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.05 m. Determine the magnitude of the maximum radial acceleration of the discus
Gas lanterns used on camping trips have mantles (small lacy bags that give off light) made from a rayon mesh impregnated with thorium, A typical mantle contains 345 mg of thorium. What is the activity of the mantle
A man throws a grenade from a car that is travelling at 90km/hr and wishes to throw it into a car heading in the same direction at 110km/hr
A laser emits a cylindrical beam of light 2.6 mm in diameter. what is the rms value of the electric field in the laser beam
If 100 physics students each give off 100 W as they sit in the classroom taking an exam, estimate the temperature increase of the room during the hour-long test
In western movies, the hero sometimes detects an approaching trainby "listening" to the railroad tracks. If the tracks are made ofsteel, how many times faster does sound travel in the tracks thanin air?
An electron close to a large, flat sheet of charge is repelled from the sheet with a 2.2pN force. Find the surface charge density on the sheet
A satellite of mass 190 kg is placed into Earth orbit at a height of 600 km above the surface. how long does the satellite take to complete one orbit
A burglar alarm in a house emits sound at a fixed frequency of 3.1 kHz. On a windy day a person cycles past the house while the alarm is sounding. What frequency does the cyclist hear
question a 3.4 kg object moving at 5.4 ms in the positive direction of an x axis has a one-dimensional elastic
what is the maximum instantaneous power dissipated by a3.0hp pump connected to a 240-Vrms ac power source, what is the maximum current passing through the pump
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