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A thin metal plate is insulated on the back and exposed to solar radiation on the front surface. The exposed surface of the plate has an absorptivity of 0.7 for solar radiation. If solar radiation is incident on the plate at a rate of 550 W/m2 and the surrounding air temperature is 10°C, determine the surface temperature of the plate when the heat loss by convection equals the solar energy absorbed by the plate. Take the convection heat transfer coefficient to be 25 W/m2· °C, and disregard any heat loss by radiation.
The supersonic aircraft Concorde has a length of 61.6m when sitting on the ground on a typical day when the temperature is 12.0C . The Concorde is primarily made of aluminum
Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 33.0 degree below the horizontal
A fisherman has caught a very large, 5.0 kg fish from a dock that is 2.0 m above the water. If the fish is at rest at the water's surface, what's the least amount of time in which the fisherman can raise the fish to the dock without losing it
A whale of 18 meter in length and mass 4000 kilogram leaps straight out of the water such that half its body length is above the surface. determine how fast was it going at that moment
a solid sphere of radius a10cm is concentric with a spherical conducting shell of inner radius b20cm and outer radius
A 500g ball moving at (10.0cm/s, +x) collides with an identical ball at rest.The incoming ball scatters at 30 degrees with respect to the +x axis, What is the speed of the each ball after collision
On wet pavement, the coefficient of kinetic friction may be only 0.25. How fast should you drive on wet pavement
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
What are the magnitude and direction of the net force. how long does it take for the police car to catch up with the speeder.
A ceiling fan has five blades, each with a mass of 0.90 kg and a length of 0.66 m. what is the total rotational kinetic energy of the five blades
A projectile os fored at 35 degrees above the horizontal. Its initial speed is equal to 100 m/s. What is the maximum height reached by the projectile
A train is moving parallel and adjacent to a highway with a constant speed of 23 m/s. Initially a car is 57 m behind the train, What is the speed of the car just as it passes the train
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