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A 7100 kilogram boxcar traveling at 12.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 4.5 m/s. Evaluate what is the mass of the second car?
how much work does the electric field do in moving a proton from a point with a potential of 130 v to a point where it
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.40 106 N/m and is compressed 3.58 cm as the car is brought to rest. What was the speed of the car before impact, as..
An object is held up by two ropes. rope 1 makes an angle of 65 degrees above horizontal and the tension in it is T1 = 26N. rope 2 makes an angle of 32 degrees above horizontal and the object is in equilibrium. what is the tension in rope 2 (T2) an..
A power supply with internal resistance of 8 ? applies a voltage of 26 V. If a load resistor of 52 ? is in series with the power supply, what is the current going through the circuit
question1an old oaken buck of mass 6.75 kg hangs in a well at the end of a rope. the rope passes over a frictionless
The average temperature in Gunnison for the first two months of the year are: 1) January (31 days) 10°F 2) February (28 days) 15° F. What are the total number of degree days for Gunnison over these two months?
an 85-kg skier is sliding down a ski slope. the slope makes an angle of 23degrees above the horizontal direction. what is the force acting on the skier perpendicular to the slope
A car is moving at a constant velocity for 3s until it is 3.0 m from a yellow light. It slows to a stop in 2.0s. It remains stopped for 50s and then speeds up for 2s.
Consider a series LRC circuit with R=39 ?, L=0.11 H and C=1 µF. Find the angular resonant frequency of oscillations
When its coil rotates at a frequency of 230 Hz, a certain generatorhas a peak emf of 86 V. (a) What is the peak emfof the generator when its coil rotates at a frequency of 34 Hz?(b) Determine the frequency of the coil's rotation when the peak emf of ..
a 74 gram block of ice at 0 degrees celcius is placed in 673 grams of water at 27 degrees celcius what is the final temperature of the mixture
A wheel is spinning at 89 rad/s. Itundergoes an angular acceleration of 13rad/s2 until it reaches an angular velocity of243 rad/s. Determine how many revolutions it made while spinning up
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