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In a very busy off-campus eatery one chef sends a 239-g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.79 m/s. Almost simultaneously, the other chef launches a 321-g veggieburger-on-a-bun (with everything, but hold the horseradish) along the same counter from right to left at 2.31 m/s. The two delicacies collide head on at the given speeds-the counter is practically friction-free due to accumulated grease-and merge into a single, unbelievably savory serving. In what direction does the delectible dish move, if it moves at all?
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
A stick with a length of 1m is supported by a knife edge at the 50 cm mark (middle). Two masses m1: 0.4 kg and m2: 0.6 kg are hanging.. m1 20 cm from the left end, Calculate the torque created by m1
A reversible engine takes in 555 J per second and exhausts 482 W, How much power does it produce?
A hair dryer has a power rating of 1400 W at 110 V rms. Assume the hair dryer circuit contains only resistance. What is the rms current drawn by the hair dryer
A current of 6.71 A in a solenoid of length 11.0 cm creates a 0.339-T magnetic field at the center of the solenoid. How many turns does this solenoid contain
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1330 Hz. What is the speed of the bird
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 11.7 rad/s. how far would you have gone if the bike could move
What is mechanical energy
20 g of helium are placed in a cylinder with a movable piston. What is the maximum temperature reached during the compression
Oil is being loaded into a barge through a 150 mm diameter pipe whose exit is at an angle ? (alpha)= 60 degrees to the horizontal. Determine the force exerted by the barge on the rope
A golf ball is struck off a tee (negligible height and air resistance) with initial velocity of 50 meters per second at an angle of 30 degrees above the horizontal. Illustrate what will be the vertical component of velocity after 2.5 seconds?
A refrigerator does 18 kj of work while moving 115 kg of thermal energy from inside the refrigerator. What is its coefficient of performance
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