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Q. As part of a safety investigation, two 1200 kg cars travelling at 24 m/s are crashed into different barriers. Determine the average forces exerted on (a) the car that hits a line of water barrels and takes 1.5 seconds to stop, and (b) the car that hits a concrete barrier and takes 0.3 seconds to stop.
How does the magnitude of electrical force between a pair of charged objects change while the objects are moved twice as far apart? Three times as far apart.
Express your reply in terms of the cylinder's radius r and the magnitude of the acceleration because of gravity g.
At what position is the third bead in equilibrium? Can it be in stable equilibrium.
Assume you are 80cm from a plane mirror. What area of the mirror is used to reflect rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.60 mm.
The wheel of a car has a radius of .350 m. the engine of the car applies a torque of 295 Nxm to this wheel that does not slip against the road surface.
Eight lights are connected in parallel to a 110 V source by two leads of total resistance 2.20. If 240 mA flows through each bulb, what is the resistance of each.
What must be the value of the putty mass m so that the amplitude after the collision is one-half the original amplitude.
A force vector has a magnitude of 590 newtons and points at an angle 44o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
A massive steel cable drags a 25-kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 4.5m/s in 1.5s. What is the difference in tension between the two ends of cable.
plan a vector to represent each of the two teams. find the magnitude of the resultant.
At t = 0, a particle leaves the origin with a velocity of 9 m/s in the positive y direction and moves in xy plane with a constant acceleration of (-2 i -4 j) m/s2. At t = 1 s, what is the velocity of particle in the x direction.
When a train's velocity is 12{rm{ m/s}} eastward, raindrops that are falling vertically with respect to the earth make traces that are inclined 30.0 ^circ to vertical on windows of the train.
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