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Q1. A positive charge of q = 3.5 µC is pulled on by two negative charges. One, -2.0 µC, is 0.050 m to the north and the other, -4.0 µC, is d = 0.029 m to the south. What total force is exerted on positive charge?
Q2. If air drag is negligibly small, how fast is a sequoia cone moving while it reaches the ground if it dropped from the top of a 114 tree?
Q3. Liquid nitrogen has a boiling point of 77.3 K and a latent heat of vaporization of 2.01 105 J/kg. A 60.0-W electric heating element is immersed in an insulated vessel containing 46.5 L of liquid nitrogen at its boiling point. How various kilograms of nitrogen are boiled away in a period of 7.50 h?
Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire.
Find an expression for work done by the gas
Calculate the net work done on Gas
Illustrate the role of the Sun's differential rotation in the formation of sunspots. Explain (briefly) the 22 year solar cycle, stating its essential features. Estimate the y-component of magnetic force.
How numerous revolutionsthe wheel have made through the time
What is the magnitude
What are the original charges on each sphere
What is the least coating thickness required
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
A string of 13 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 63 W. What is the comparable resistance of light string.
What is the Bens kinetic energy
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