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A 1.9 kg water balloon is thrown from a dormitory window that is 11.5 m above level ground. The balloon's initial velocity is 18.6 ms/ directed 33? above the horizontal. What is the change in the gravitational potential energy of the water balloon-Earth system during the flight?
A 70 cm long, 0.8 mm diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
Two atomic particles approach each other in a head-on collision. Each particle has a mass of 1.54 x 10-25 kilogram. Find the speed of one particle as seen by other particle
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80m/s^2. What is its initial velocity as it leaves the ground
suppose you wish to make a solenoid whose self-inductance is 1.4 mh. the inductor is to have a cross-sectional area of
biologists think that some spiders tune strands of their web to give enhanced response at frequencies corresponding to
A car battery stores about 4.0MJ of energy. If all this energy were used to create a uniform electric field of 32kV/m, What volume would it occupy
If a bubble in sparkling water accelerates upward at the rate of 0.263 m/s2 and has a radius of 0.694 mm, evaluate what is its mass
A small object of radius r and mass m is released at the edge of a round bowl with radius R>>r and rolls toward the bottom. What fraction of the kinetic energy is rotational if the object is (1) a marble, (2) a coin, and (3) a point particle (i.e r=..
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A heavy uniform rope of length L is placed on two tables where the coefficient of static friction is µs. What is the critical separation distance D before the rope starts to fall
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 6.6 m/s. Ignore fritional losses. What is the height of the hill
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