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The moon barely covers the sun at a solar eclipse. Given that the moon is 4 X 105 kilometer from Earth and that the Sun is 1.5 X 108 kilometer from Earth, find how much bigger the Sun diameter is than the moon. If the moon radius is 1800 kilometer, determine how big is the Sun?
A car drives west on 8th Street at a speed of 39.3 mph. How long (time) does it take the car come to a complete stop
a 120 turn coil of radius 1.8 cm and resistance 5.3 ? is placed outside a solenoid of radius 1.6 cm. Find the magnitude and direction of the current induced in the coil
A spotlight on a boat is y = 2.7 m above the water, and the light strikes the water at a point that is x = 9.4 m horizontally displaced from the spotlight (see the drawing). The depth of the water is 4.0 m. Determine the distance d, which locates the..
A turntable that turns 10 revolutions each second is locatedon top of a mountain. how fast does the spot of laser light sweep across cloudsthat are twice as far away
Find out the magnitude of the acceleration (in m/s2) for an alpha particle in a uniform electric field with a magnitude of 100 N/C
A uniform cylindrical turntable of radius 1.50 m and mass 29.2 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4? rad/s. The fixed turntable bearing is frictionless. A lump of clay of mass 2.49 kg and negligible ..
A thin uniform rod (length = 1.1 m, mass = 4.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 mL2. The rod is released when it is 55° below the horizontal. What is..
A dolphin leaps out of the water at the angle of 46° above the horizontal. The horizontal component of the dolphin's velocity is 9.40 m/s. Find out the magnitude of the vertical component of velocity.
Suppose a crate of mass 8.4 kg is placed on the plank in the figure below at a distance x = 8.3 m from the left end. find the forces exerted by the two supports on the plank
A neutron (mn= 939.6 MeV/c2) at rest decaysinto a proton (mp= 938.3 MeV/c2), an electron(me = 0.5 MeV/c2), and an antineutrino(mν ˜ 0). Find the momentum and kinetic energy of each particle
A wheel starts to rotate with constant acceleration and in 1minute performs 1000 rotations. Find acceleration and final speed of the wheel
A bumper car with mass m1 = 109.0 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 84.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Assume the surf..
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