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Two pole-vaulters just clear the bar at the same height. The first lands at a speed of 7.70 m/s, and the second lands at a speed of 7.95 m/s. The first vaulters clears the bar at a speed of 2.00 m/s. Ignore air resistance and friction and decide the speed at which the second vaulter clears the bar.
calculate the energy released by fission of 1 g of uranium-235 in mwd mega watt day assuming that the energy per
A 3000kg rocket and its 500 kg payload are traveling at a speed of 2000m/s. what is the velocity of the payload after separation
A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 52.5 kg and air resistance exerts a total upward force of 610 N on her and her parachute.
The focal lengths of the objective and the eyepiece in a microscope are 0.29 cm and 2.50 cm, respectively. compute the final magnification of the microscope
a 5.15e4 kg space probe is traveling at a speed of 11300 ms through deep space. retrorockets are fired along the line
A properly motivated kangaroo can jump over an object. what is the velocity of the kangaroo, just when it returns to the ground
A car is driving directly north on the freeway at a speed of 100 km/h and a truck is leaving the freeway driving 79 km/h in a direction that is 33 degrees west of north. What is the magnitude and direction of the truck
Calculating plants maximum possible thermal and actual efficiency.
Interstellar space has a magnetic field on the order of 0.1 nT. Matter in this space is mainly Hydrogen atoms (about 1 per cubic centimeter) moving with speeds of about 1 km/s. Compare the energy in the magnetic field to the Kinetic Energy of the ato..
A bullet of mass mb = 0.02 kg is moving with a speed of 100 m/s when it collides with a rod of mass mr = 5 kg and length L = 2 m. What is the angular speed (in rad/s) of this rotation
A 10-turn square coil of area 0.036m2 and a 20-turn circular coil are both placed perpendicular to the same changing magnetic field. What is the area of the circular coil
A solenoid of radius 1.6 cm has 351 turns and a length of 10 cm.The permeability of a free space is 1.25664 × 10^?6 V · s/A · m. Find the rate at which current must change through it to produce an emf of 56 mV
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