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An automobile having a mass of 1000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 4.45x10^6 N/m and is compressed 3.30 cm as the car is brought to rest. What was the speed of the car before impact, assuming no energy is lost in the collision with the wall?
You are driving down a straight road at speed of 90 km/h and see another car approaching you at speed of 110 km/h along the road, how fast is the other car approaching you
A flat coil enclosing an area of 0.11 m2 is rotating at 58 rev/s, with its axis of rotation perpendicular to a 0.20 T magnetic field. what is the maximum voltage induced in the coil
an electron is moving in free space with a velocity equal to 105 ms and is aiming at a stationary electron far away
A 15 pF capacitor is charged to 1 kV and then removed from the battery and connected in parallel to an uncharged 65 pF capacitor, Find the change in energy
An alpha particle (helium nucleus, charge +2e) starts fromrest and travels a distance of 3.0 cmunder the influence of a uniform electric field of magnitude10.0 kV/m. What is the final kinetic energy of the alpha particle
A 76 kg astronaut floating inspace in a 111 kg MMU (mannedmaneuvering unit) experiences an acceleration of 0.035 m/s2,. What is the thrust of the thruster
Consider two uniformly charged parallel plates as shown in the figure. The magnitudes of the charges areequal.If the plates are 1.0 cm by 1.0 cm squares,and the charges on the plates are +/- 2.6 μC respectively,what is the magnitude of the electric f..
A runner moving at a constant speed of 11.7 m/s rounds a curve of radius 4.10 m. calculate the acceleration of the runner. (State the magnitude of this acceleration.)
A trains whistle is a pipe thats open at only one end is emitting a sound at its second overtone. What is the length of the whistle in centimeters
A tiny sphere with a charge of q = +6.4 µC is attached to a spring. Two other tiny charged spheres, each with a charge of ?4.0-µC, are placed in the positions shown in the figure, in which b = 4.1 cm.
A bullet is fired horizontally from a gun while another bullet is dropped vertically from the same height as the gun. Ignoring air resistance
An air-track glider attached to a spring oscillates between the 10.0 {rm cm} mark and the 58.0 {rm cm} mark on the track. The glider completes 15.0 oscillations in 35.0 {rm s}. What are the (a) period, (b) frequency, (c) amplitude, and (d) highest..
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