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A sphere, with I=2/5 MR2 , rolls without slipping down a ramp of length L inclined an angle (theta) from the horizontal. What is the acceleration of the sphere at the bottom of the ramp.
At a distance of 60.0km from a radio station antenna the electric-field amplitude is 8.80×10?2 V/m, what is the total power output of the station
The amount of 14C in an old, isolated sample of vegetation is 0.666 that expected from a present day sample with an equivalent carbon content
A 2.2-kg cart is rolling along a frictionless, horizontal track towards a 1.9-kg cart that is held initially at rest. What was the velocity of the first cart when the second cart was still at rest
you place a magnetic compass on a horizontal surface allow the needle to settle into its equilibrium position and then
monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in air. the reflected
A convergent-divergent nozzle with an exit-to-throat area ration of 1.616 has exit and reservoir pressures equal to 0.947 and 1.0 atm, respectively
A clear crystal ball of diameter 10 cm is made from solid glass of index of refraction 1.5. A fortune teller looks through the ball at an object 10 cm high located on the other side of the ball 50 cm from the center of the ball. Light travels from th..
Sonar is used to determine the speed of an object. A 40-kHz signalis sent out, and a 42-kHz signal is returned. Assume the speed of sound is 345 m/s. How fast is the object moving
Consider a universe in which Einstein's postulates and special relativity are valid but the speed of light c = 200 miles/hour. A Toyota with proper length L and a Bentley with proper length 3L are racing.
Co-60 is often used as a radiation source in medicine. It has a half-life of 5.25 years. How long, after a new sample is delivered, would the activity have decreased to about 1/3 its original value.
A person walks in the following pattern: 9.8 km north, then 1.6 km west, and finally 7.0 km south. Construct the vector diagram that represents this motion and from it judge how far and in what direction a bird would fly in a straight line from th..
Starting from the front door of your ranch house, you walk 50.0m due east to your windmill, For the entire trip from your front door to the bench, what is your average velocity
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