Physics, 11.04.2020 04:48 rainboworld3994
The total kinetic energy of two cars is measured before and after they crash into each other. The total kinetic energy of the two cars after the crash is less than the total kinetic energy before the crash. Which of the following best explains the loss of kinetic energy
A. The car with more mass gave up its kinetic energy to the car with less mass.
B. Some of the cars' kinetic energy was converted to sound and heat energy.
C. Both of the cars were being pulled downward by the force of gravity.
D. Energy in a system is always lost.
Answers: 2
Physics, 21.06.2019 19:40
Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.
Answers: 2
Physics, 22.06.2019 12:20
What is the coefficient of kinetic friction μk between the block and the tabletop?
Answers: 1
Physics, 22.06.2019 15:30
What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology
Answers: 2
Physics, 22.06.2019 19:50
State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory
Answers: 1
The total kinetic energy of two cars is measured before and after they crash into each other. The to...
Social Studies, 19.07.2019 04:30
Physics, 19.07.2019 04:30
Biology, 19.07.2019 04:30
Biology, 19.07.2019 04:30