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A 3.0-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, therope makes an angle of 4.0 degrees with the vertical. Find the acceleration of the car.
The magnetic field of a plane-polarized electromagnetic wave is given by B=1.2*10^-6 Sin[2pi (z/240 – (t*10^7)/8)] in SI units . The field vector is B_ = B(z,t)[(i^+J^)/ 2^(1/2)]. Find the average power per square meter carried by the EM wave. Writ..
The driver of a car going at 68miles/h suddenly sees a truckahead at 60 m moving slowly at 23 miles/h in the samedirection. By slamming on to the brakes, the driver of thecar achieves a maximum deceleration of 5m/s^2.
Illustrate what is the maximum vertical displacement that he ball reaches during its trajectory?
A violin string has a length of 0.360 m and is tuned to concert G, with fG = 392 Hz. (a) How far from the end of the string must the violinist place her finger to play concert A, with fA = 440 Hz? (b) If this position is to remain correct to one-half..
An object is thrown vertically upward and has a speed of 20.0 m/s when it reaches two thirds of its maximum height above the launch point, determine The velocity of the object at maximum height
A 460 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, What is the tension in the main cable supporting the piano
Near the earth the intensity of radiation from the sun is 1.35 kW/m2. What volume of space in this region contains 1.0 J of electromagnetic energy? (c = 3.0 x 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2) options:
If two adjacent natural frequencies of an organ pipe are determined to be 475 Hz and 575HZ. Calculate the fundamental frequency and the length of the pipe.
two displacement vectors of magnitudes 21 cm and 79 cm are added. which one of the following is the only possible
consider a metal in which electrons are well described in terms of independent electrons moving in a periodic
The Starship Enterprise returns from warp drive to ordinary space with a forward speed of 58 . To the crew's great surprise, a Klingon ship is 120 directly ahead, traveling in the same direction at a mere 30 .
Three electrons are aligned on a straight line and separations between them are 1.0 mm. Outer two electrons are fixed in position. find the electric potential at the position of the center electron
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