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A 2000-kg car travelling at an initial speed of 50 km/h skids to a stop with a constant acceleration.
If the coecient of kinetic friction between the locked tires and the road is 0.50. Determine the length of the skid marks.
A uniform 1.3-kg rod that is 0.76 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Find the angle that the rod makes with the horizontal
Calculate the moment of inertia and the rotational kinetic energy for the following objects spinning about a central axis
Draw the displacement for the father and son.
which is basically a diskshaped grindstone of mass 1.2 kg and radius 7.30 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone and find out it takes 39.0 s for it to stop rotating.
Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 15.0 cm) 10.0 cm away from an object. Find the image distance and the magnification. explain the image that he observes.
Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1.3 mm. What is the resistance ratio RA/RB , measured between their ends
A doorway acts as a single slit for light that passes through it, but a doorway is much larger than the wavelength of visible light, Estimate the width of the doorway
Suppose an ideal monatomic gas at an initial temperature of 475 K is compressed from 3.20 L to 2.15 L while its pressure remains constant at 1.01 105 Pa. Find the work done on the gas.
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 4.30 × 105 kg
A shot putter releases the shot with a velocity of 29m/sec at an angle of 22 degrees counterclockwise with the right horizontal
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
To stretch a certain spring by 3.00cm from itsequilibrium position requires 9.50J of work, What is the force constant of this spring
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