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1- A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.7 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the adjacent building is 2.0 m below the jumping-off point. Find the maximum value for D.
2- A rifle is used to shoot twice at a target, using identical cartridges. The first time, the rifle is aimed parallel to the ground and directly at the center of the bull's eye. The bullet strikes the target at a distance of HA below the center, however. The second time, the rifle is similarly aimed, but from 4.5 times the distance from the target. This time the bullet strikes the target a distance of HB below the center. Find the ratio of HB/HA.
3- In a marathon race, Chad is out in front, running due north at a speed of 3.95 m/s. John is 92 m behind him, running due north at a speed of 4.53 m/s. How long does it take for John to pass Chad?
A 20 liter tank of helium is at a pressure of 172kPa at a temperature of 0 C. What is the speed of the helium atoms in the tank at this new volume
The drawing shows a person looking at a building on top of which an antenna is mounted. How tall is the antenna
Water at a pressure of 3.2 atm at street level flows into an office building at a speed of 0.5 m/s through a pipe 5.6 cm in diameter. Calculate the water pressure in such a pipe on the top floor
A dipole is formed by point charges +3.8 micro Coulomb and -3.8 micro Coulomb placed on the axis at (0.45 m, 0) and (-0.45m, 0), respectively. At what positions on the axis does the potential have the value 7.7×105 V? There should be an x1 and an ..
A block of iron 3.00 kg is charged positively with the net charge of .010C. find the fraction of the electrons removed from thus iron
A slingshot will shoot a 10-g pebble 22.0 mstraight up. How much potential energy is stored in the slingshot's rubber band
A hot-air balloon is rising upward with a constant speed of 3.88 m/s. When the balloon is 7.87 m above the ground, How much time elapses before the compass hits the ground
After collision, the component of the total momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to floor.find out the masses of pieces 1 and 2.
A 0.400-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. How far does the putty-block system compress the spring
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.29 mA. In one hour of operation How much charge flows in the circuit
When rebuilding her car's engine, a physics major must exert 450 N of force to insert a dry steel piston into a steel cylinder at a constant velocity. What is the normal force between the piston and cylinder
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. determine the maximum inductance of the tank circuit
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