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A 15.0-kg satellite has a circular orbit with a period of2.27h and a radius of 7.90×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 8.90m/s2, what is the radius of the planet?
Calculate the absolute pressure at an ocean depth of 75 m. Assume the density of sea water is 1 028 kg/m3 and the air above exerts a pressure of 101.3 kPa
Evaluate the electrostatic energy of two opposite charges
An electron going east with speed ve = 0.4c collides with a proton going north with speed vp = 0.3c. Find the direction of the photon
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Compute the de Broglie wavelength of each particle at the temperature of 2050 K. (kb is Boltzmann's constant, 1.38×10-23 J/K).
n 6 moles of a monatomic ideal gas initially fills a v0 0.35 m3 container at p0 85 kpa. the gas undergoes an
A 74 kg man in a 6.0 kg chair tilts back so that all the weight isbalanced on two legs of the chair. find the pressure exerted by each leg on the floor
A 4.50 kg counterweight is attached to a light cord, which is wound around a spool. The spool is a uniform solid cylinder of radius 6.00 cm and mass 1.80 kg. What is the net torque on the system about the point O
An expensive grand piano has been pushed to the top of the ramp 1.77 m high inclined at 28.90 degrees at the back of a moving van. How long will it take the piano to reach the bottom of the ramp
A 5,000 kg satellite is orbiting the Earth in a circular path. The height of the satellite above the surface of the Earth is 800km. The velocity of the satellite is (Me = 5.98 x 10^24 kg, Re = 6.37 x 10^6 m, G = 6.67 x 10-11 N • m2/kg2)
A given individual is unable to see objects clearly when they are beyond 100cm. what focal length lens should be used to correct this problem
A 0.359-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface Find the mechanical energy of the system
A monochromatic parallel beam of light of wavelength 633 nm is incident on totally reflecting plane mirror.angle of incidence is 60 degree. and number of photon striking per second is 1X10^19.calculate force exerted by light beam on mirror
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