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A man starts from a position 310m north of his car and walks for 2.7 min in a westward direction at a constant velocity of 10km/h. How far is he from his car when he stops?
One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that vibrates at a frequency 112 Hz. What is the speed of a transverse wave on the rope
An object is placed 1.5m in front of a mirror and you see an inverted image that is half the object size. How far and in what direction should you move the object
An argon-ion laser produces a cylindrical beam of light whose average power is 0.662 W. How much energy is contained in a 1.88-m length of the beam
A copper pot with a mass of 0.485kg contains 0.175kg of water, and both are at a temperature of 20.0?C. Find the final temperature of the system
A wheel initially rotating at an angular speed of 2.4 rad/s turns through 30 revolutions during the time, How long did the acceleration last
two stones are released from rest at a certain height one after the other.a. will the difference between their speeds
A tank having a volume of 0.11 m3 contains helium gas at 170 atm. How many balloons can the tank completely fill
As part of an exercise routine a 47.0 kg person climbs a set of stairs. Each stepis18.0 cm high and thereare 78 steps in the staircase. Assuming the work done coming down the staircase is negligible, howmany times must this person climb the staircase..
An electron is inside a solenoid, 28 cm from the solenoid axis. At what rate is the solenoid's magnetic field changing
A 220 g block hangs from a spring with spring constant 12 N/m. At t=0;{rm s} the block is 31cm below the equilibrium point and moving upward with a speed of 89.0 cm/s. What is the block's distance from equilibrium while the speed is 30 cm/s.
A ball is thrown straight upwith an initial velocity v0=4.9 m/s. Assume that the acceleration due to gravity is g=9.8 m/s^2 downward. How long does it take to come back to its inital position
A transverse periodic wave is represented by the equation y(x, t) = 2.50 cm cos(2,500 rad/s t - 15.0 m-1 x). What is the frequency of the vibration of the wave
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