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1. Three electrons are placed at the coners of a 45 degree triangle (triangle is a right triangle). The distance along the horizontal and the vertical corners are 10^-8. Discover the magnitude and direction.(no a text book question)
2. A 1 kilo ohm resistor is connected to a capacitor to for man RC circuit. It's found that after 2 X10^-3s the voltage in the capacitor decreases to 10% of its initial value. What is the capacitance? (not from book)
An archer shoots an arrow with a velocity of 30 m/s at an angle of 20 degrees with respect to the horizontal. What is the initial speed of the apple
a laser having an internal loss per round-trip of 0.015 when pumped at three times threshold has an output power of 4w.
you are designing an electro microscope capable of resolving two features separated by 1 nm. the f-number fd is 100.
One mole of an ideal monatomic gas is taken through the cycle shown in the figure. Assume that p = 3 p0, V = 3 V0, p0 = 1.01×105 Pa, and V0 = 0.0250 m3. Calculate the energy added as heat during stroke abc
Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. Determine the period of the metal pendulum
a prism is made of glass of unknown ri. a parallel beam of light is incident on a face of the prism. the angle of min
when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose stiffness is 3.0 105 N/m. Explain how much must we compress the spring?
A point charge Q = +1.69 µC moving in a uniform magnetic field of B = 1.22 T has a velocity of v = 5.93×105 m/s that is perpendicular to the magnetic field. what is the direction of the resulting force
A 4.4 kg block of aluminum is heatedat atmospheric pressure so that its temperature increases from28.5°C to 44.0°C. Find the change in the block's internal energy
A dolphin at Seaworld is to jump through a hoop held in the air by a trainer, At what speed did the dolphin leave the water
two point charges are on the y-axis. a 5.5 microc charge is located at y 1.15 cm and a -2.26 microc charge is located
a bar of gold bar a is in thermal contact with a bar of iron bar b of the same length and area. one end of the compound
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