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An astronaut is traveling in a space vehicle that has a speed of0.455crelative to Earth. The astronaut measures his pulse rate at69.5per minute. Signals generated by the astronaut's pulse are radioed to Earth when the vehicle is moving perpendicularly to a line that connects the vehicle with an Earth observer.
(a) What pulse rate does the Earth observer measure?
min?1
(b) What would be the pulse rate if the speed of the space vehicle were increased to 0.990c?
A 16 cm long animal tendon was found to stretch 3.9 mm by a force of 13.9 N. The tendon was approximately round with an average diameter of 7.5 mm. Calculate the elastic modulus of this tendon.
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A 1.5-H inductor is connected in series with a 200-Ω resistor through a 15-V dc power supply and a switch, what is the maximum energy stored by the inductor
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