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1. A student at another university repeats the experiment you did in lab. Her target ball is 0.860 m above the floor when it is in the target holder and the steel ball she uses has a mass of 0.0120 kg. She finds that the target ball travels a distance of 1.50 m after it is struck. Assume g = 9.80 m/s2. What is the kinetic energy (in joules) of the target ball just after it is struck?
The isotope Po (A-218 Z-84) can decay by either alpha or beta emission. What is the energy release in each case
A 710 kg car stopped at an intersection is rear-ended by a 1800 kgtruck moving with a speed of 16 m/s. If the car was in neutral andits brakes were off, so that the collision is estimated elasticfind the final speed of the truck. Find the final sp..
When at cruising altitude, a typical airplane cabin will have an air pressure equivalent to an altitude of about 2510 m. During the flight, what is the net force on one ear drum due to this pressure difference
Consider a comet in a long, thin elliptical orbit with a semi-major axis of one AU. Illustrate what can you say about the sidereal period of this comet?
A 20.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block
If a transformer steps the voltage down from 8800 V (at the pole) to 120 V (at the building) and it is to deliver 1000 kW to the building at 80% efficiency, what is the ratio of primary turns to secondary turns
Is the collision completely elastic
All the pulleys are frictionless, and the strings are massless. Illustrate what are the tensions in all the strings and what are the acceleration of the masses?
What is the fundamental resonant frequency of the air column if the velocity of sound in the air is 340 m/s.
You have a 0.421-kg sample of gas containing 1.99 moles. Calculate the rms, average, and most probable speeds of the gas\'s molecules
A large reflecting telescope has an objective mirror with a 10.0 m radius of curvature. what angular magnification does it produce
If each rock strikes the fixture traveling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, find out how high above the lowest point does the impact make your light fixture swing?
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