Which of the following is the human ear able to detect?
musical note
sonar<...
Physics, 28.01.2020 23:02 mgavyn9457
Which of the following is the human ear able to detect?
musical note
sonar
ultrasound
dog whistle
Answers: 3
Physics, 22.06.2019 03:50
Two polarizers are oriented at 70โโ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?
Answers: 1
Physics, 22.06.2019 09:40
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.
Answers: 1
Physics, 22.06.2019 11:50
The mass of the sun is 1.99ร1030kg and its distance to the earth is 1.50ร1011m. what is the gravitational force of the sun on the earth?
Answers: 3
Physics, 22.06.2019 20:50
In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
Answers: 3
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