Physics, 30.06.2019 10:30 justhereforanswers13

Awave has a wavelength of 13 mm and a frequency of 18 hertz. what is its speed?

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Physics, 22.06.2019 09:00, reyesortiz6955

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

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Physics, 22.06.2019 16:20, brittanysanders

What is the mass of the water that is being heated? it requires 2,500 joules to raise a certain amount of water (c = 4.186 jig c) from 20.0°c to 60.0°c. o 159 o 40 g o 63 g o 80 g

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Physics, 23.06.2019 01:00, kaziyahf2006

When solid surfaces slide over each other the kind of friction that occurs is called friction

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Physics, 23.06.2019 02:30, Braxtonw875

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?