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An energy of 0.1 J is stored in the metal ball on top of a Van de Graaff generator. A spark carrying 1 micro coulomb (10^-6 C) discharges the ball. What was the ball potential relative to ground?
if a lightning strike can be approximated by considering a cloud and the earth as a parallel plate capacitora find the
A 1400 kg car carrying four 96 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
A snowboarder hits end of jump at speed of 14.0 m/s. The boarder is traveling at 13.) mi/s at highest point of jump. Determine height at highest point in air
A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A uniform plank of length 5.8 m and weight 217N rests horizontally on two supports, with 1.1m of the plank hanging over the right support. To what distance x can a person who weighs 460 N walk on the overhanging part of the plank before it just beg..
a group of students have measured the time it takes for a cart to travel some distance along a level track. their best
Consider an electromagnetic made from a solenoid, hooked to an EMF source. compute the strength of the magnetic field inside the solenoid
a member of an aircraft maintenance team crew wears protective earplugs that reduce the sound intensity by a factor of
A particle moving along the x xis in simple harmonic motion startsequilibrium position, the origin at t=0 and moves to the right. Find the maximum particle acceleration of the particle
The noise level in an empty examination hall is 40 dB. When 100physics students are writing an exam, the sounds of heavy breathingand pens traveling rapidly over paper cause the noise level to riseto 63 dB (not counting the occasional groans).
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.4 when the flywheel is rotating at 1.4×104 revolutions per minute. What is the moment of inertia of the flywheel
You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. how far away can you stand to hit the orange
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