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It's nighttime, and you've dropped your goggles into a swimming pool that is 4.0m deep. If you hold a laser pointer 1.1m directly above the edge of the pool, you can illuminate the goggles if the laser beam enters the water 2.5m from the edge. How far are the goggles from the edge of the pool?
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Determine the length of the lake
The carbon isotope 14C is used for carbon dating of archeological artifacts. 14C ( mass 2.34×10?26kg) decays by the process known as beta decay in which the nucleus emits an electron, What is the recoil speed of the nucleus
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Find the translational speed at the top
Each second, 5525 m3 of water flows over the 670-m-wide cliff of the Horseshoe Falls portion of Niagara Falls. How far from the base of the cliff is the barrel
question1the force vector a has a magnitude of 91.0 newtonrsquos and points due east. the force vector b has magnitude
If the free end of the string is held in place and the hoop is released from rest , calculate the angular speed of the rotating hoop after it has descended 0.750m
A spaceship of mass 2.20×106 is cruising at a speed of 5.40×106 when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 4.90×105 , is blown straight backward with a speed of 2.40×106 . A second piece, with..
An extreme skier, starting from rest, coasts down a mountainthat makes an angle 25.0° with the horizontal. How fast is shegoing just before she lands
At what speed do a bicycle and its rider, with a combined mass of 100-kg, have the equal momentum as a 1500 kg car travelling at 5 ;{ rm m}/ {rm s}.
question1a 44.0 kg child is in a swing that is attached to ropes 1.90 m long.the acceleration of gravity is 9.81
When light of wavelength 370 nm falls on a barium surface, electrons having a maximum kinetic energy of 0.86 eV are emitted. Find values of the work function of barium
What would be the equilibrium temperature when a 253-g block of copper at 281^circ C is placed in a 137g aluminium calorimeter cup containing 817-g of water at 14.5^circ C.
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