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A 2400-kilogram truck is 6.00 meter from one end of a 27.0-meter-long bridge. A 1500-kilogram car is 10.0 meter from the same end. Find how much weight must each end of the bridge support?
A 42.0 kg seal at an amusement part slides from restdown a ramp into the pool below. estimate the work done by kinetic friction
A 65kg ice skater standing on frictionless ice throws a .15 kg snowball horizontally at a speed of 32m/s. At what velocity does the ice skater move backwards
for safety in climbing a mountaineer uses a nylon rope that is 50 m long and 1.0 cm in diameter. when supporting a
Two identical parallel-plate capacitors, each with capacitance C, are charged to potential difference ?V and then disconnected from the battery. Find the potential difference across each capacitor after the plate separation is doubled
A parallel-plate capacitor is to be constructed by using, as a dielectric, rubber with a dielectric constant of 3.20, What is the minimum area the capacitor plates can have
A geosynchronous orbit is one in which the satellite orbits above the equator, and has an orbital period of 24 hours, so that it is always above the same point on the spinning earth. Calculate the altitude ofsuch a satellite.
Determine the orbital speed of a satellite that circles the Earth with a period of 2.50 104 s. The mass of the Earth is 5.97 1024 k
A parallel-plate air capacitor has a capacitance of 300 {\rm pF} and a charge of magnitude 0.250 \mu {\rm C} on each plate. The plates are 0.500 {\rm mm} apart. What is the surface charge density on each plate
Two satelities S1 and S2 revolve round a planet in coplanar circular orbits in the same sense. Their periods of revoluions are 1h and 8h respectively. The radius of the orbit of S1 is 10^4km.
A 4.00-g bullet is moving horizontally with a velocity of +355 m/s, where + sign indicates that it is moving to the right. The bullet is approching two blocks resting on a horzizonta frictionless surface.
An electron is released a shortdistance above Earth's surface. A secondelectron directly below it exerts an electrostaticforce on the first electron just great enoughto cancel the gravitational force onit. How far below the first electronis the sec..
a ferris wheel has a radius of 11.0 m and rotates once every 11 s, what is the force of the chair seat on you
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