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The intensity of solar radiation at the top of Earth's atmosphere is 1340 W/m3. Assuming that 60% of the incoming solar energy reaches Earth's surface and assuming that you absorb 50% of the incident energy, make an order-of-magnitude estimate of the amount of solar energy you absorb in a 60 minute sunbath. (Suppose that you occupy a 1.7 m by 0.3 m area of beach blanket and that the sun's angle of elevation is 60°.)
A point charge +q of mass m, (m,+q) is placed at point P along the x-axis where V_r(infinity) is known. Find the expression for the new velocity at the second point
A cannon fires a 2-kg exploding projectile across a level field on a windless day. How far away from the cannon does the second piece land
A primitive musical instrument can be made with stretching a rubber band across the diameter of a can which is open on the top, closed on the bottom. Say the diameter of the can is 12.0 cm and it has a height of66.0 cm.
A 10-cm-long nichrome wire is connected across the terminals of a 1.5 V battery. What is the current density inside the wire
A liquid is dripped onto and spreads across a water surface until the liquid layer is one molecule thick. The index of refraction of the liquid is 1.25 and that of the water 1.333. A student shines ultraviolet light on the liquid layer and decides th..
A solenoid is wound with a single layer of copper wire of radius 0.370 cm. The solenoid is 4.50 cm in diameter and 1.60 cm long. What is the inductance of the solenoid per unit length
A clay ball of 0.1 kilogram is dropped 10 cm above a table. Determine what is its impulse
An ideal refrigerator utilizes a Carnot cycle operating between 0 degree C and 26 degree C. How much energy must be supplied to the refrigerator
A 4.0 Hz wave with an amplitude of 12 cm and a wavelength of 30.0cm travels along a stretched string. How far does a knot on the string travel in the same time interval
A spring is resting vertically on a table. A small box is droppedonto the top of the spring and compresses it, What is the magnitude of the spring's displacement whenthe spring is fully compressed
An ideal gas initially at pressure 8.0 atm and temperature 300K expands adiabatically until its volume doubles. Find the final pressure and temperature if the gas is (a) monatomic, and (b) diatomic
A spherical balloon is made from a material whose mass is 3.00 kg. The thickness of the material is negligible compared to the 1.4 m radius of the balloon. Find the absolute pressure of the helium gas
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