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A 51.0 kilogram swimmer with an initial speed of 1.28 m/s decides to coast until she comes to rest. If she slows with constant acceleration and stops after coasting 2.20 meter, find what was the magnitude of the force exerted on her by the water?
Two point charges lie on the x axis. A charge of +9.5 µC is at the origin, and a charge of -9.5 µC is at x = 10.0 cm, What is the net electric field at x = -4.0 cm
A rock of mass 34 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 248 N. Elucidate what is the magnitude of the acceleration of the rock?
A car with a mass of 2400 kg is traveling at a speed of 40.0 km/h on an icy road when it collides with a 10000 kg truck which was traveling toward the car with the speed of 18 km/h. Find the change in the kinetic energy of the system
A simple pendulum is made from a 0.55-m-long string and a small ball attached to its free end. how much time elapses before it attains its greatest speed
A baseball (m = 149 g) approaches a bat horizontally at a speed of 42.8 m/s (96 mi/h) and is hit straight back at a speed of 48.4 m/s (108 mi/h). what is the average force exerted on the ball by the bat
A drop of water on a countertop reflects light from a flower held 3.40 cm directly above it. The flower's diameter is 2.10 cm, and the diameter of the flower's image is 0.114 cm. What is the focal length of the water drop, assuming that it might be t..
A heavy sled is being pulled by two people. The coefficient of static friction between the sled and the ground is %u03BCs = 0.579, find the minimum rope tension required to get the sled moving
In an LC circuit where L = 12 mH and C = 30 μF with anelectromagnetic oscillation the current amplitude is 2.5mA. find the natural frequency and the period of the oscillation
A negative charge -0.550 µC exerts an upward 0.700 N force on an unknown charge 0.280 m directly below it. What is the unknown charge (magnitude and sign)? What are the magnitude and direction of the force that the unknown charge exerts on the -0.550..
a -12.0nc point charge and a 24 nc point charge are 15.5cm apart on the x-axiswhat is the electric potential at the
How do excitation and emission take place in atoms? What is an absorption spectrum, What is the function of a spectrometer
To basketball player bounces the 0.60-kg basketball to anotherplayer by bouncing it off the court. what was the impulse delivered to it by the court
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