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On a very muddy football field, a 117 kilogram linebacker tackles an 86 kilogram half back. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 m/s north and the half back is sliding with a velocity of 6.9 m/s east. Find what is the velocity at which the two players move together immediately after the collision?
magnitude m/s
direction ° north of east
The pitch of the sound from a race car engine drops the musical interval of a tenth when it passes the spectators. How fast is the race car moving
Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Determine the speed of each disk after the collision
A certain pipe has resonant frequencies of 385 Hz, 495 Hz, and 605 Hz, with no other resonant frequencies between these values. How long is this pipe
What is the gauge pressure of the air in the tires when its temperature rises to 27 .00C and its volume increases to 1.67 x 10-2 m3? Assume atmospheric pressure is 1.01 x 105 Pa.
a 1320-kg car is traveling with a speed of 18.0 ms. what is the magnitude of the horizontal net force that is required
a 2.0 meter long string that has a mass of 24.0 grams is under 45 n of tension. a sinusoidal wave with an amplitude
A fire truck attaches two fire hoses to a hydrant to fight a fire. each hose has a diameter of 20 cm. What is the speed of the water in the fire hoses
A 54.2 g block of copper whose temperature is 400 K is placed in an insulating box with a 120 g block of lead whose temperature is 200 K. What is the change in the entropy of the system
The efficiency of a Carnot engine is 27%. The engine absorbs 795 J of heat per cycle from a hot reservoir at 499 K. Determine the heat expelled per cycle and the temperature of the cold reservoir.
Blue light of frequency 6.5 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons.
An electron in a television tube travels the 22 cm distance from the grid to the screen at an average speed of 7.00 107m/s. How long does the trip take
A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, What are the tensions in the rope in front and behind her
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