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Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. The only way that the station can exhaust thermal energy is by radiation, which it does using thin, 2.3m -by-3.5m panels that have a working temperature of about 6 C. How much power is radiated from each panel? Assume that the panels are in the shade so that the absorbed radiation will be negligible. Hint: Don't forget that the panels have two sides!
Two children are carrying a 2.00-m long uniform level board with a mass 5.00 kg, What is the force applied by the child that is closer to the book to support the board
A uniform, solid, right, circular cylinder rolls down an 4.00 m incline without slipping. How fast will the cylinder be rotating at the bottom
Light of wavelength 517 nm is used to illuminate normally two glass plates 22 cm in length that touch at one end, How many bright fringes appear along the total length of the plates
A strong electromagnet produces a uniform magnetic field of 1.60 T over a cross-sectional area of 0.260 m2. What is the current induced in the coil
A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature?..
A 11 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.2 m/s2, find the force exerted by the rope on the bucket of water
q1. an airplane is flying with the velocity of 85.0 ms at an angle of 20.0 degrees above the horizontal. when the plane
A block is released from rest at the top of a frictionless ramp (inclined plane) that makes an angle of 25° with respect to horizontal. What is the length of the ramp D1
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.19 106 m/s. Find the centripetal acceleration of the electron
q1. an observer moving toward earth with a speed of 0.97 notices that it takes 5min for a person to fill her car with
A 20.0kg light signal hangs from the end of a 7.0m uniform density pole of mass 12.0kg. The pole is free to swivel from the hinge at point A, What is the reaction force (magnitude and direction) at the hinge
questiona mass m 90 kg slides on a frictionless track that has a drop follow by a loop-the-loop with radius r 15.1 m
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