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In atwood's machine two masses m1 and m2 hang vertically, connected over a frictionless pulley. Assume m2 > m1. Find the magnitude of the masses acceleration in terms of m1, m2, and g. Evaluate the acceleration numerically if m1=0.20 kg and m2=0.70 kg.
What is tension in the cord
The average output power of a cellular phone, which can be treated as a point of E-M waves, is 1.0W when it is "ON". Estimate the intensity of the phone's E-M waves in your brain
Calculate the magnetic force per meter between two such lightning bolts separated by 10 meters. (This is mainly to give a feeling for the strength of the magnetic field)
How many kilometers per liter will a car obtain if its engine is 25 percent efficient and it encounters and average force of 1000 Newtons? Suppose the energy content of gasoline is 40,000,000 joules per liter (J/L).
A 200 mL volume of neon gas is at 1.2 atm of pressure. If it was heated from 250 K to 500 K what is the volume if the pressure is held constant
200 g of lead (c=128 j/kg*K) at 100 degree (=100 C) are placed in a container filled with 200g of water (c=4190 j/kg*K) at 20 degree (= 20 C). How much Heat is exchanged with the environment
A rotating cylinder about 12.00 km in length and 8.00 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the same acceleration because of gravity on Earth.
If you stand on a bathroom scale, the spring inside the scale compresses 0.40mm, what does the scale read at its peak
A small, 1.90-mm-diameter circular loop with R = 1.40×10?2? is at the center of a large 110-mm-diameter circular loop. What is the induced current in the inner loop
A series RLC circuit has components with the following values: L = 18.0 mH, C = 90.0 nF, R = 10.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit
An electron moving at a speed of vi= 0.960c in the positivex direction collides with another electron at rest, Based only on the original data given in the problem, use conservation of energy to find the speed of the second electron
A 20x telescope has a 12-cm diameter objective lens. What minimum diameter should the eyepiece lens have to collect all the light rays from an on axis distant source.
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