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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?
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistanceRof 8.0 ? as shown in the figure. The wire and the rod are placed in the plane of the paper.
When a clock reads 5 seconds a cart's velocity in the positive x direction is 3 m/s. What is the magnitude (in m/s2) of the acceleration of the cart
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm. What is the approximate volume of a proton
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis, What is the radius of a chamber
Sodium ions (Na+) move at 0.843 m/s through a bloodstream in the arm of a person standing near a large magnet. what would be the magnetic force on the arm
Playing horseshoes the object is to throw a 1kg horse shoe a horizontal distance of 10.5 m to a vertical stake. at what angle does the shoe impact the ground
Mutual induction can be used as the basis for a metal detector. A typical setup uses two large coils that are parallel to each other , find the new value of the induced emf
The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. FIND magnitude of the magnetic force the field exerts on the proton
An object is shot horizontally with an initial speed of \(v_o\) meters per second. If it can fall a vertical distance h before hitting the ground, how far can it move in the horizontal direction
when an ambulance is stationary the siren gives off a sound at a frequency of 500 hz. in answering the following
a small plastic ball with a mass of 6.15 x 10-3 kg and with a charge of 0.158 microc is suspended from an insulating
The speed of an object is known to be 3.0 X 108m/s. You measure the velocity of the object during an experiment, find the percent error associated with these two values
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