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The escape velocity from the Moon is much smaller than from Earth and is only 2.38 km/s. At what temperature would hydrogen molecules (molecular mass is equal to 2.016 g/mol) have an average velocity Vrms equal to the Moon's escape velocity?
An aluminum-alloy rod has a length of 10.008 cm at 16.400°C and a length of 10.020 cm at the boiling point of water. (a) What is the length of the rod at the freezing point of water
An ac generator producing 20 V (rms) at 200 rad/s is connected in series with a 50-%uF057 resistor, The rms voltage (in volts) across the capacitor is
A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.
Two ideal polarizers A and B are aligned so that their transmission axis are vertical and horizontal respectively. Assuming that unpolarized light of intensity Io is incident upon the first polarizer (Polarizer A), find an expression for the light ..
a laser having an internal loss per round-trip of 0.015 when pumped at three times threshold has an output power of 4w.
Consider a liquid drop of mass 83 mg falling with a terminal velocity of 5.9 m/s. Assuming a linear drag force R = bv, where v is the speed of the drop, what is the value of the constant b (in mg/s)?
calculate the magnitude of the force if Q1 is 4 x 10^-9 coulombs and Q2 is 8 x 10^-12 coulombs and the distance between them is 3 x 10^-8 meters.
While lifeguarding, Jenny is twirling a whistle in uniform circular motion next to herself (the whistle is moving in a vertical plane). The radius of the circular path is 55cm. The cord slips from her hands and the whistle moves off tangentially, by ..
Calculate the work done by gravity on a 35kg satellite orbiting 600 km above the earth's surface for 1 revolution around the earth
1. What compass heading (i.e. what direction with North=0?, East=90?, etc.) should you fly? 2. How long will the flight be?2. How long will the flight be?
The flash unit in a camera utilizes a 9.0V battery to charge a capacitor. The capacitor is then discharged through a flash lamp. The discharge takes 10s, and the average power dissipated in the flash lamp is 10 W.
We live at the bottom of a sea of air. The density of this air at the Earth's surface and 0°C is 1.29 kg/m3. Assume that the density of air does not change as we move away from the Earth. What height would the atmosphere be?
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