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Water skiers often ride to one side of the center line of a boat, as shown in the figure . In this case, the ski boat is traveling at 15 m/s and the tension in the rope is 79 N .
If the boat does 3600 J of work on the skier in 53.7 m, what is the angle between the tow rope and the center line of the boat?
A 6.50 g lead bullet traveling at 560 m/s is stopped by a large tree. what is the increase in temperature of the bullet
How much time take for the package to reach the ground.
Assume that the earth has an average surface temperature of29°C and is a perfect emitter of radiation (e = 1). Find the energy per second per square meter
A steel wire with mass 29.7 g and length 1.52 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m. Compute the linear density of the string
A 17-kg projectile is fired at an angle of 60° above the horizontal and with a speed of 240 m/s. At the highest point of its trajectory the projectile explodes into two fragments with equal mass, one of which falls vertically with zero initial spe..
A student sits on a rotating stool holding two 3.6-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A potter's wheel moves from rest to an angular speed of0.22 rev/s in 30 s. Find its angular acceleration in radians per second
A copper wire that is 1 m long has a radius of 0.6mm is stretched to a length of 3 m. what is the fractional change in resistance, change in R/R, as the wire is stretched?
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. If bats emit a chirp at a frequency of 9.47 104 Hz, and if the speed of sound in air is 343 m/s, what is the smallest i..
a binary star system has a period of 7.7e6 7700000 s. it is noted that one star is moving twice as fast as the other
q1. if the focal length of the concave lens is -7.50 at what distance from the lens must an object be placed so that
A wave has the following properties: amplitude = 0.208 m, period = 0.687 s, wave speed = 13.7 m/s. The wave is traveling in the -x direction
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