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1. A 1kg ball with velocity 20m/s bounces perpendicularly off a wall so it has the similar speed afterward if the average force is20000N then how long in milliseconds did the collision take?
a) 1000 ms b) 10 ms c) 5 ms d) 2ms
2. A .5 kg ball, traveling 20 m/s, is struck by a bat, imparting an impulse of 50 Ns in the opposite direction. Discover the speed of the ball after being struck.
a) 50m/s b) 20 m/s c) 30 m/s d) 80 m/s
A car with a mass of 1000kg is traveling with a velocity of12m/s.The friction due t air resistance is 750N. What is the magnitude of the force needed(bythe engine) to accelerate the car to 18.9m/s in 4.5s? What is the magnitude of the force needed to..
Two capacitors, C1 = 28.0 µF and C2 = 34.0 µF, are connected in series, and a 24.0-V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent capacitor.
Charge of -3.30 nC and a charge of -6.25 nC are separated by a distance of 40.0 cm. Find out the position at which a third charge of +7.60 nC can be placed so that the net electrostatic force on it is zero.
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3, What must be the minimum diameter of the spherical balloon
A ball of mass m moving with velocity v_i_vec strikes a vertical wall. What is the final angle theta_f that the ball's velocity vector makes with the negative y axis
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 16.0 cm, find electric feild just outside paint layer
A simple pendulum consists of a ball of mass 5.00 kg hanging from a uniform string of mass 0.0510 kg and length L, determine the speed of a transverse wave in the string when the pendulum hangs vertically
A load of bricks with mass = 16.0 hangs from one end of a rope that passes over a small, frictionless pulley. What is the tension in the rope while the load is moving
What is the amount of the normal force on the charge on the surface in Newtons, when including both the weight of the object and the electric force on it?
A singly charged positive ion has a mass of 3.20 multiplied by10-26 kg. After being accelerated from rest through a potential dissimilarity of 848 V, the ion enters a magnetic field of 0.800 T along a direction perpendicular to the direction of the f..
Sam's circuit has a 24 Ω resistor that is connected in series to two 12 Ω resistors that are connected in parallel. find the value of JoAnna's resistors
A daredevil plans to bungee jump from a balloon 72.0 m above a carnival midway. He will use a uniform elastic cord, What length of cord should he use
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