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Q. A race car travels around a 1000 m circular track at the rate of 250 km/hr. What is the car's angular speed? What angular distance will it travel in 10sec?
Q. An open-pit coal mine consumes 71hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometres, is separate in this time?
Which of the following must be true if we are to infer (calculate) a star's luminosity directly from the inverse square law for light.
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
A golf ball with the initial angle of 34° lands exactly 240 m down the range on the level course.
A music store has jazz, classical, country-western and rock music albums on tapes and CDs in the following quantities finding the probability.
What is first order diffraction angle of light
What is wave number
Find out an average acceleration of the motorcycle
An object has a kinetic energy of 313 J and the momentum of magnitude 24.1 kg·m/s. Find out the speed and the mass of the object.
A string of 13 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 63 W. What is the comparable resistance of light string.
A worker pushes horizontally on a large crate with a force of 297 N, and the crate is moved 4.8 m. How much work was done.
A speeding motorist traveling 100km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
Consider two inertial reference frames. while an observer in each frame measures the following quantities, which measurement made by two observers must yield the same results.
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