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A 1000 kg car is traveling at 10 m/s [ N 24 E] when it collides with a 1500 kg truck traveling at an unknown angle [ N x W]. After the collision both vehicles stick together and travel due North at 9.0 m/s.
What was the magnitude and direction of the truck's initial velocity?
A ship leaves the island of Guam and sails a distance 265km at an angle 37.0? north of west. In which direction must it now head so that its resultant displacement will be 120km directly east of Guam? How far must it sail so that its resultant displa..
An infant's pulse rate is measured to be 156 ± 4 beats per minute. What is the percent uncertainty in this measurement? (Note that percent uncertainties should be reported to two significant figures.)
After a reaction time of 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.30 m/s2. Including the reaction time
For a movie scene, a 75kg stuntman drops from a tree onto a 55kg sled that is moving on a frozen lake with a velocity of 15m/s toward the shore. What is the speed of the sled after the stuntman is on board
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 rider of mass 50 kg sits on a toboggan of mass 70 kg. which in turn sits on a frictionless frozen pond. Find the maximum value of F for which the rider will not slide on the toboggan
A ball is tossed upwards at 15 m/s from the side of a building. When it is at a displacement of 14 meters below where the ball is launched, what is the final velocity of the ball in m/s? If the answer is negative, include a negative sign, but do..
a man enters a tall tower needing to know its height. he notes that a long pendulum extends from the ceiling almost to
The rectangular frame of Figure is fixed in the ground. Determine the stiffness matrix for the force system shown.
a a balloon of radius 30.5 cm is sprayed with a metallic coating so that the surface is conducting. a charge of
Why is the voltage-current relationship different for a light bulb vs. a resistor?
In the Bohr model, as it is known today, the electron is imagined to move in a circular orbit about a stationary proton. what would be the corresponding orbital radius
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