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A 2,000 kilogram car traveling at 90 km/h crashes into an immovable concrete wall.
(a) Determine the time of collision, assuming that the center of the car travels halfway to the wall with constant acceleration. (Use any plausible length for the car.)
(b) Find the average force exerted by the wall on the car.
A 1.3 kg block of ice at -30oC is placed in thermalcontact with a 7 kg piece of Al at 280oC. Determine how much ice melts and its temperature
a 105 -muf capacitor is connected to an ac generator with an rms voltage of 20.0 v and a frequency of 100.0 hz. what is
a train traveling at v0 25.0 ms begins to brake by applying a velocity-dependent instantaneous acceleration av alpha
As Jupiter (or any planet) orbits the sun, the sun responds by orbiting in a much smaller “orbit” around their mutual center of mass. At what distance from the center of the sun is the Sun-Jupiter center of mass? What is the sun’s circular velocity ..
A particle of charge -60nC is placed at the center of anon-conducting spherical shell of inner radius 20cm and outerradius 25cm. The spherical shell is uniformly charged with acharge density of -1.33μC/m3.
A baseball is bunted down the third-base line leaving the bat from a height of 0.800m with an initial velocity of 8.00m/s at an angle 30 degrees above the horizontal. What is the speed of the ball just before it hits the ground
a 10-cm-diameter parallel-plate capacitor has a 1.0 mm spacing. the electric field between the plates is increasing at
If 18.75 mol of helium gas is at 10.0*C and a gauge pressure of0.350 atm. calculate the volume of the helium gas under these conditions
A laser of 750 nm is shown through a grating having 5,000 lines per cm. What is the angle to the first order spots
If the pipe is open at one end only, how many harmonics are possible in the normal hearing range from 20 to 20000 Hz
the specific heat of a 96 g block of material is to be determined. the block is placed in a 25 g copper calorimeter
an automobile whose speed is increasing at a rate of 0.700 m/s^2 travels along a circcular road of radius 20.0m, determine the tangential acceleration component
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