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A racing bike travels 141 meter along a circular track of radius 15 meter. Find the angular displacement of the racing bike from its starting position?
Over a time interval of 1.92 years, the velocity of a planet orbiting a distant star reverses direction, changing from +22.2 km/s to -20.5 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) du..
Space probes require power systems that can remain functional over long periods of time. One innovative design for a small electrical power source uses the energy released by the alpha decay of curium-244.
A standing wave on a string fixed at both ends has three antinodes. The string is 85.0 cm long. What is the wavelength of this standing wave
On the salt flats of Bonnevile, Utah (latitude 41 degrees N) the British auto racer John Cobb in 1947 became the first man to travel at a speed of 400 mph on land. If he was headed due north at this speed, find the ratio of the magnitude of the Co..
You slip a wrench over a bolt. Taking the origin at the bolt, theother end of the wrench is at x = 18 cm, y = 5.5 cm. What is the torque on the bolt
a mass is hanging from a spring. consider this position the zero point. it is in equilibrium at this position. by
A pen contains a spring with a spring constant of 231 N/m. When the tip of the pen is in its retracted position; the spring is compressed 5.70 mm from its unstrained length. In order to push the tip out and lock it into its writing position, the spri..
Two waves of equal amplitude A meet on a string and make a new wave of amplitude 1.5A. what is the smallest relative phase between the waves to make this possible?
A proton is moving in the uniform electric field of part A. At point A, the velocity of the proton is 1.95×104{\rm m/s} , again pointed towards the east. What is the speed of the proton at point B
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8x10^7m and its rotation period to be 22.3 hours, find the mass of the planet and star
an explorer is caught in a whiteout in which the snowfall is so thick that the ground cannot be distinguished from the
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring, What is the length of a year on this planet
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