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A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.3 m/s. The car is a distance d away. The bear is 21 m behind the tourist and running at 6.0 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
A mass spectrometer applies a voltage of 2.00 kV to accelerate a singly charged positive ion. What is the mass of the ion
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
A violinist is tuning the A string on her violin by listening for beats when this note is played simultaneously with a tuning fork of frequency 440 Hz. What was the frequency of the mistuned A string
Find the magnitude of the acceleration of the particle. What are the x- and y-coordinates of the shell where it explodes,associated to its firing point.
A huge explosion is heard 26.2 miles away. How long does it take the sound to travel that far
q1. a motorist travelling with constant velocity of 15 ms about 34 mph passes a school crossing corner where the speed
An iron bar of mass, 0.82 kg, slides down a frictionless incline 0.29 m high, What is the speed of the combined masses after collision
An air puck of mass \(m_{1}\) is tied to a string and allowed to revolve in a circle of radius R on a frictionless horizontal table. determine the radial force acting on the puck
a 13.4-kg block rests on a horizontal table and is attached to one end of a massless horizontal spring. by pulling
a straight wire lies along the y-axis initially carrying a current of 10 a in the positive y-direction. the current
Two charged bodies exert a force of .145N on each other. If they are now moved so they are one fourth as far apart, what force is exerted.
question the light intensity incident on a metallic sur- face with a work function of 2.03 ev produces photoeletrons
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