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During a strenuous period of extravehicular activity, an astronaut generates 2.0 MJ of heat per hour, which must be removed by means of the liquid cooling and ventilating garment (LCVG) worn under the spacesuit. How much water must be circulated in the LCVG to remove this quantity of heat if it takes it from the astronaut at 37oC and dumps it at 0oC?
A silver wire has resistivity ? = 1.96 × 10-8 ?·m and a cross-sectional area of 5.00 mm2. What is the displacement current in the wire at that time
q1. a 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 hz. what is its
A 2.4 kg breadbox on a frictionless incline of angle %u03B8 =43 is connected, by a cord that runs over a pulley, What is the speed of the box when it moves 10 cm down the incline
Light of wavelength 600nm is incedent normally on a surface of area 4 cm^2. Determine the radiation pressure exerted upon the surface
A motorcycle is traveling up one side of a hill and down the other side. The crest of the hill is a circular arc with a radius of 46.0 m. Determine the maximum speed that the cycle can have while moving over the crest without losing contact with the ..
Two forces are acting on an object: 8 N [N22.1 ºE], and 5 N [S 34.8 ºE]. What is the magnitude (in N) of the resultant force acting on the object.
A 100 W beam of light is shone onto a black body of mass 2 x 10^-3 kilogram for a duration of 10^4 s. The black body is initially at rest in a frictionless space. Obtain the final kinetic energy of the black body
Two objects are connected by a string that passes over a frictionless pulley as shown in the figure. Assume the incline is frictionless and take m1=2.00kg, m2=6.00kg and theta=55.0 degrees. (a) Draw free-body diagrams of both objects (b) find the mag..
A caterpillar climbs up a one-meter wall. For every 3 cm it climbs up, it slides down 1 cm. It takes 10 minutes for the caterpillar to climb to the top. Compute the speed at which the caterpillar travels.
A dish of hot food has an emissivity of 0.40 and emits 20 W of thermal radiation. If you wrap it in aluminium foil, which has an emissivity of 0.008, how much power would it radiate.
An ideal refrigerator maintains a temperature of 8c inside it, whereas in the kitchen the temperature is 25c. find te energy ejected into the kitchen
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
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