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Q. A convex spherical mirror with a radius of curvature of 14.5 cm produces a virtual image one half the size of the real object. Where is the object?
Q. A man and a boy carry a canoe 5.90 m long and weighing 379 N. The canoe is held overhead in a horizontal position. The boy holds one end of the canoe. How far from the opposite end should the man stand so that the boy exerts a force of only 124 N?
The particle then begins to move. Find out the speed of the alpha particle after it has moved through a potential difference of −3.45×10−3 V.
A thin rod (length = 1.49 meter) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. Find what is the angular speed of the rod
A beam of 168-MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.200-kg tumor and gives it a 2.00-Sv dose, how many nitrogen nuclei were stopp
If a physicist designs a circuit to operate at room temperature where the 100kΩ resistor carries out a current of 1 mA, how could he estimate the minimum size of the resisto
A flying squid (family Ommastrephidae) is able to "jump" off the surface of the sea by taking water into its body cavity and then ejecting the water vertically downward. How
A threory of nuclear astrophysics is that all the heavy elements like uranium are formed in supernova explosions of massive stars, which immediately release the elements int
A 0.30 kilogram object is attached to a spring with force constant 167 N/m therefore that the object is allowed to move on a horizontal frictionless surface. Calculate its a
A commuter train blows its horn as it passes a passenger platform at a constant speed of 60.0 m/s. What is the frequency observed by a person on the platform as the train appr
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