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A train 400 m long is moving on a straight track with a speed of 82.4 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.4 km/h. Assuming constant acceleration,determine how long the train blocked the crossing.Disregard the width of the crossingCopy and paste your question here...
1. derive the electric field due to a dipole. explain all the steps.2. a sphere with radius 2 cm is placed at a
A woman finds the front windshield of her car covered with ice at -11.4 °C. Find how much heat in joules is required to melt the ice
string a is stretched between two clamps separated by distance l. string b with the same linear density and under the
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sam heaves a 16-lb shot straight upward giving it a constant upward acceleration from rest of 45.0 ms for 64.0 cm. he
A 5.90 gram lead bullet traveling at 320 meter per second is stopped by a large tree. find the increase in temperature of the bullet
Find the time elapsed before the block B separates from A.
A 260(omega) resistor is in series with a 9.50×10?2H inductor and a 0.56 (mu)F capacitor. Compute the impedance of the circuit at a frequency of f1 = 500 Hz
A 119-µF capacitor is connected to an ac generator with an rms voltage of 20.0 V and a frequency of 121.0 Hz. What is the rms current in this circuit
Radio station WQED in Pittsburgh broadcasts at 89.3 MHz with a radiated power of 43.0 kW. What is the magnitude of the momentum of each photon?
A charged capacitor with capacitance C is being discharged through a variable resistor that has its resistance dependent on time: R = R(t). Find this function if the current through it remains constant until the capacitor is completely discharged ..
Two speakers, each with a power output of 0.510 Watt, are mounted facing each other and 33.8 meter apart. Find the total sound intensity a person hears when they are midway between the speakers
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