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The intensity of radiation from a distant source like the Sunvaries inversely with the square of the distance from thesource. At the top of Earth's atmosphere the solar intensity(power per unit area) is 1.35 kW/m2. If a spaceship with a solar panel of area 125 m2 were halfway between the Sun and Earth, determine the total solar energy that the panel would receive in a day. Express your answer in kilowatt hours and in joules.
find the net rate of radiation by a pot at 35.7°C that has been placed in a -23.9°C freezer. The pot's surface area is 0.111 m2 and its emissivity is 0.655.
During a physics experiment, helium gas is cooled to a temperature of 19.0K at a pressure of 0.140 atm. What are the average energy per atom
One of the loudest sounds in recent history was that made by the explosion of Krakatoa on August 26-27, 1883. what was the decibel level on Rodriguez Island
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 W
A target glider, whose mass m2 is 370 g, is at rest on an air track, a distance d = 53 cm from the end of the track. How much more time elapses before the gliders collide again
An athlete training for an event does 6.53 104 J of work during a workout and gives off 6.17 105 J of heat, Determine the magnitude of the change in internal energy of the athlete
At the Earth's surface, a projectile is launched straight up at a speed of10.5km/s. To what height will it rise
Calculate how long a de-orbit burn must last in minutes and secondsto achieve the Shuttle’s change in altitude from 212 miles to60 miles at perigee.
A 2500ml - flask is initially open to air at 24 celsius and 1 atm pressure. It's then closed and immersed in boiling water. What's the maximum pressure reached in the flask
Mary needs to row her boat across a 200 m-wide river that is flowing to the east at a speed of 1.1 m/s. Mary can row with a speed of 2.4 m/s. What is her speed with respect to the shore
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