Physics, 20.08.2021 02:00 aileenzerr9664
An observer at rest on Earth finds that a spacecraft is approaching Earth at a speed equal to 0.99c relative to Earth. A light signal emitted by the ship has a duration equal to 2.2µ/sec in relation to an observer inside the ship. What is the duration of this signal relative to the observer at rest on Earth?
Answers: 1
Physics, 22.06.2019 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
Answers: 1
Physics, 22.06.2019 20:20
The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
Physics, 23.06.2019 19:30
Arock thrown straight up takes 4.2 s to reach its maximum height what was its initial velocity
Answers: 1
Physics, 23.06.2019 20:00
How does an electric transformer use electromagnetic induction?
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An observer at rest on Earth finds that a spacecraft is approaching Earth at a speed equal to 0.99c...
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