48. When the Voyager 2 spacecraft passed Neptune in 1989, it was 4.5 x 109 km from the earth. Its radio transmitter, with which it sent back data and images, broadcast with a mere 21 W of power. Assuming that the transmitter broadcast equally in all directions, b. What electric field amplitude was detected
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Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
Physics, 22.06.2019 13:00
Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 β 103 s. given that the charge of an electron is 1.6022 β 10β19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.
Answers: 1
Physics, 22.06.2019 16:00
The solid that is formed and usually sinks to the bottom of a solution is the
Answers: 2
48. When the Voyager 2 spacecraft passed Neptune in 1989, it was 4.5 x 109 km from the earth. Its ra...
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