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A point mass of 1kg collides elastically with a stationary point mass of 5 kg. After collision,the 1 kg mass reverses its direction and moves with a speed of 2m/s. calculate total momentum of system and kinetic energy of centre of mass?
An athlete competing in long jump leaves the ground with a speed of 9.14 m/s at an angle of 35.0 ° above the horizontal
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 6.04 × 105 kg
An electron starts from rest 2.88 cm from the center of a uniformly charged sphere of radius 1.99 cm. how fast will the electron be moving when it reaches the surface of the sphere
A generator has a 170-turn square coil, 4cm on a side. Find the peak emf in this coil when it's rotating at 95.0Hz in a strong 6.1T field
A car's starter motor draws 55 A from the car's battery when starting up. If the start-up time is 2.4 s, how many electrons pass a location in the circuit during that time
The density of water is 1000kg/m^3 or 8.33lbm/gallon, the mass flow rate is 494838.83 kg/s and goes through a turbine generator that has 0.80 efficiency
A car is traveling along a straight road at a velocity of +31.0 m/s when its engine cuts out. For the next ten seconds, the car slows down, and its average acceleration is a1.
A typical ten-pound car wheel has a moment of inertia of about 0.35 kg*M^2. find the rotational kinetic energy K of the rotating wheel
A wheel initially rotating at an angular speed of 2.4 rad/s turns through 30 revolutions during the time, How long did the acceleration last
A small block having mass m sits on a uniform disk that has radius R=0.5m. What is the initial angular velocity of the disk
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
Four charges are located in a plane as follows: q1 = -5 uC at (4,0) m; q2 = -3 uC at (4,4) m; q3 = -4 uC at (0,4) m; q4 = -2 uC at (0,0) m. Find the magnitude and direction of the resultant field at (2,2)
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