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(a) Can a satellite be sent out to a distance where it will revolve about the earth with an angular velocity equal to that at which the earth rotates, so that it remains always above the same point on the earth?
(b) Must the plane of its orbit be an equatorial plane?
(c) What would be the radius of such an orbit?
A light beam having a wavelength of 470. nm in air is directed into glycerine (n = 1.47). What is the frequency of the light in the glycerine
Earth's magnetic field at the surface near the poles is around 60 x 10-6 T. What is the Larmor frequency of protons at this location?
Most conventional gasoline-powered automobiles are equipped with a 12 V (nominal) battery. What is the maximum resistance of the starter motor for proper operation
A coil has 460 turns andself-inductance 3.45 mH. The currentin the coil varies with time according to i = (680mA) cos(πt/0.0250 s).
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. (The other 96 W is carried away by convection and conduction.) The filament has surface area of 0.170 mm2 and an emissivity of 0.950. Find the filament's temperature.
The moment the other student passes you, you start accelerating at 2.67 m/s2, After what distance will you catch up with your classmate
2.0 kg of water at 14 C is mixed with 2.0 kg of water at 53 C in a well-insulated container. Estimate the net change in entropy of the system
an object travels in a circle of radius 2.0 m. at time t 0 the object has a velocity of 10 ms and it slows uniformly
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. How many excess electrons does a typical red blood cell have
The distance to a star is approximately 7.60 x 1018 meter. If this star were to burn out today, in how many years would we see it disappear? Find how long does it take for sunlight to reach Mars
A 170-turn circular coil has diameter 5.05cm and resistance 1.20? . A magnetic field perpendicular to the coil is changing at 1.20T/s
A uniform beam of mass 10 kilogram is supported only at its ends. A workman stands on the beam, one quarter of the way from one end. Determine what force must support the end
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