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A baseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8.0 A????1 10-3 seconds. The ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the force?
The graph of braking distance versus car speed is part of a parabola. Thus,the equation is written d=av2b+v+c. The distance, d,has units in meters, and velocity, v,has units in meters/second. How could you find the units of a, b,and c? What would ..
A 0.20mm diameter copper wire is 13m long. What is the power dissipation in the wire if the potential difference across its ends is 14V
The catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 80.6 m/s in 12.6 seconds, find the acceleration of the aircraft when it launches
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. What is the average net force (magnitude and direction) exerted on the ball by the cushion
A charge +q is at the origin. A charge -2q is at x = 9.10 m on the +x axis. (a) For what finite value of x is the electric field zero? (b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V =..
A particle of mass 9.82 g and charge 67.7 μC moves during a uniform magnetic field, in a region where the free-fall acceleration is -9.8 m/s2 without falling. The velocity of the particle is a constant 18.3 km/s, which is perpendicular to the magnet..
A source of sound is located at the center of two concentric spheres, Determine the sound intensity at each of the three patches
under controlled darened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 506nm, What is the intensity in W/m^2 deleivered to a rod
A 180 ib soldier had an accident: He fell down from a helicopterhoverin at 150 ft above a sno packed ground. evaluate the direction of this net acceleration
A 35 kilogram trunk is pushed 4.6 meter at constant speed up a 30 degree incline by a constant horizontal force. Find the work done by the weight of the trunk
A hot air balloon is ascending straight up at a constant speed of 6.90 m/s. When the balloon is 13.0 m above the ground, a gun fires a pellet straight up from ground level with an initial speed of 31.0 m/s.
Two long parallel wires each carry 2.6A in the same direction, with their centers 1.1cm apart. Find the magnitude of the magnetic field halfway between the wires
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