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You and your friend throw balloons filled withwater from the roof of a several story apartmenthouse. You simply drop a balloon fromrest. A second balloon is thrown downwardby your friend 3.7 s later with an initial speedof 72.52 m/s. They hit the ground simultaneously.How high is the apartment house? Theacceleration of gravity is 9.8 m/s2. Neglectair resistance.Answer in units of m.
The total impedance of an RC circuit with a resistance of 200 ? is 1060 ?. If the frequency of the applied voltage is 20.0 Hz, what is the value of the capacitance in this circuit
A submarine of mass 2.88 x 106 kg and initially at rest fires a torpedo of mass 251 kg. The torpedo has an initial speed of 105 m/s. What is the initial recoil speed of the submarine
A small object carrying a charge of -6.00 nC is acted upon by a downward force of 19.0nN when placed at a certain point in an electric field. What would be the magnitude and direction of the force
assume all temperatures to be exact and neglect significant figures for small changes in dimension.an ideal gas in a
A puddle of water (n=1.33) is covered with a very thin layer of oil( n=1.10). what is the speed of light in the water
During exercise, a person may give off 145kcal of heat in 20min by evaporation of water (at 20?C)from the skin. How much water has been lost
A rifle is aimed horizontally at a target 55.0 m away. Thebullet hits the target 2.90 cmbelow the aim point. What was the bullet's flight time
a proton and a alpha particle are released from rest when they are 0.225 mm apart. the alpha particle a helium nucleus
A long piece of wire with a mass of 0.100 kg and total length of 4.00 m is used to make a suare coil with a side of 0.100 m. Find the torque acting on the coil due to the magnetic force at equilibrium
a positive charge of 5.30 oc is fixed in place. from a distance of 3.80 cm a particle of mass 6.00 g and charge 3.60 oc
Consider a string of length 1.0 meter, fixed at both ends, with mass 100 grams and tension 100 Newtons. Give the number of nodes and antinodes set up on the string if it is driven at a frequency of 95 hertz. Be sure to include the ends of the string ..
A spring-loaded gun fires a 0.080-kg puck along a tabletop. If instead it only rises to a height of 5.00 m because of friction, what is the change in mechanical energy
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