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An Earth satellite has a speed of 28100 km/hr when it is at its perigee, 281 km above Earth's surface. Find the apogee distance, the speed at apogee, and the period of revolution.
You measure an electric field of 1.32*10^6 N/C at a distance of 0.156m from a point charge. What is the magnitude of the charge
A photon, a packet of electromagnetic radiation, carries both energy and momentum. Consider a photon with a wavelength of 457 nm in vacuum. What is the momentum of the photon
A board is 6 meters long. The center of mass is in the 2 meters from the left end. The board has a weight of 320 Newton's. How much force in Newtons is necessary to lift the right end while the other end stays on the ground.
Two balls of putty, each mass m, move in opposite directions toward each other with speeds of 0.95. What is the mass of this ball of putty
A small object is located 31.6{\rm cm} in front of a concave mirror with a radius of curvature of 39.0{\rm cm}. Where will the image be formed
An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction
Two radio waves are used in the operation of a cellular telephone. To receive a call, the phone detects the wave emitted at one frequency by the transmitter station or base unit. determine the difference between the two frequencies used in the oper..
a super-particle travels forward along a straight cylindrical tube at 1000 m/s for 10 m, What is the average velocity
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.32s, What is the weight of the grapes
How much sound power will strike the eardrum of an airport worker 15.3 m from the aircraft? (Use 1.9 10-2 m as the diameter of the ear.)
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9 A, and that of the vacuum cleaner is 5.5 A. Determine the power consumed by the vacuum cleaner.
The length of a certain wire is doubled and at the same time it's radius is reduced by a factor of 2
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