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Question: A particle's velocity is described by the function vx=kt^2m/s, where vx is in m/s, t is in s, and k is a constant. The particle's position at t0=0s is x0 = -8.00 m . At t1 = 1.00 s , the particle is at x1 = 5.50 m . Determine the value of the constant k. Express your answer to three significant figures.
A plastic bar is rubbed with fur, and the bar aquires a net charge of +8.34 uC. Determine the net charge on the fur
A force vector has a magnitude of 595 newtons and points at an angle 39o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
two forces are applied to a stump by two tractors. one is a 150 n force to the east. the other is 100 n in a direction
A 45.8-kg girl is standing on a 161-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. What is the velocity of the plank relative to the ice surface
the electric potential of the earth the earth has a vertical electric field with a magnitude of approximately 100 vm
A counterweight of mass m = 3.80 kg is attached to a light cord that is wound around a pulley, What is the net torque on the system about the axle of the pulley
An Atwood machine consists of two masses, = 6.5 and = 8.5 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.80 .
The four tires of an automobile areinflated to a gauge pressure of 2.0 x 105 Pa. Determine the weight of the automobile
If a simple planar pendulum seems to be a simple harmonic oscillator, and if a simple harmonic oscillator is a system that acts like a mass on a spring, then why is the period of a mass on a spring independent of spring length ?
A baseball (m = 145 g) approaches a bat horizontally at a speed of 41.5 m/s (93 mi/h) and is hit straight back at a speed of 45.8 m/s (102 mi/h). what is the average force exerted on the ball by the bat
Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
A 52.0 kilogram person jumps from rest off a14.0 meter high tower straight down into the water. Find the magnitude of average force that water exerts on the diver
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