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Suppose the latent heat of vaporization of H2O were twice its actual value.
a) Other things being equal, would it take the same time, a shorter time, or a longer time for a pot of water on a stove to boil away?
b) Would the evaporative cooling mechanism of the human body be as effective?
Two ball shells are nested together ( centers exerting). The smaller balls diameter is R1 and bigger ones R2, Derive capacitance of the system from its definition C=Q/I?VI
An archer shoots arrows at a target. Some of the arrows stick inthe target, while others bounce off. Assuming that the masses ofthe arrows and the velocities of the arrows are the same, whicharrows produce a bigger impulse on the target? Hint: Draw a..
three forces are applied to a bracket as shown. the directions of the two 30 n forces may vary but the angle between
What is mechanical energy
A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of normal force on the block from the floor as magnitude F is increased from zero if force F is downward?
A girl coast down tha hill on a sled, reaching a levelsurface at the bottom with a speed of 7.0 m/s. how far does the sled travel on the level surface before coming to rest
Triply charged uranium-235 and uranium-238 ions are being separated in a mass spectrometer. What is the separation between their paths in meters when they hit a target after traversing a semicircle
A 2500-kg sport utility vehicle travelling at 92 km/h can be stopped in 0.25 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals that of the car both before and after the crash, and..
A rectangular container measuring 22cm multiplied by 48cm multiplied by 72cm is filled with water. What is the mass of this volume of water in kilograms and grams.
An 80-cm-long wire is made by welding a 1.2 mm-diameter, 20-cm-long copper wire to a1.2 mm-diameter, 60-cm-long iron wire. What is theresistance of the composite wire?
a mass vibrates back and forth from the free end of an ideal spring of spring constant 20 nm with an amplitude of .25
What is the potential energy of an electron that is 59.0 cm from a charge of 33.5 nC, How much work is required to move the electron very far from the charge
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