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Physics, 15.10.2019 10:30, xXCoryxKenshinXx
Do all physical quantities have dimensions? if no, name three phtsical quantities which are dimensionless
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Physics, 21.06.2019 23:00, POOPINgligma
Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?
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Physics, 22.06.2019 03:30, coollid876
Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einsteinโs special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)
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Physics, 22.06.2019 21:50, nathaniel12
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
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Do all physical quantities have dimensions? if no, name three phtsical quantities which are dimensi...
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