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A mass is suspended from the ceiling of a train car by a 45.4cm long piece of string. A passenger notices that the mass is deflected 14.7cm backward as the train accelerates forward. What is the train's acceleration?
A wheel starts to rotate with constant acceleration and in 1minute performs 1000 rotations. Find acceleration and final speed of the wheel
A resistor and an inductor are connected in series across an AC voltage source oscillating at 60 Hz. What is the rms voltage of the source
The manometer tube has an internal diameter of 0.5 cm and it is initially filled with water. Exactly 2 cm3 of an unknown liquid is then poured into one leg of the manometer, and a displacement of 5 cm between the surfaces is measured as shown. Fin..
A rectangular fish tank measures 20 cm by 60 cm by 40 cm high. The tank is filled with water to a depth of 37 cm. What is the pressure at the bottom due to the water
Two particles execute simple harmonic motion of the same amplitude and frequency along close parallel lines. What is their phase difference
How would you describe the discoveries of Benjamin franklin, Robert millikan, cgarles-augastin de coulomb and Ernest ruthford
a charge of -1.4 microc is fixed in place. from a horizontal distance of 0.0225 m a particle of mass 7.75 x 10-3 kg and
A current with sinusoidal time-dependence, whose peak value is 3.55 A and frequency is 775 cycles per second, Calculate the average power dissipated by the loop
What is the potential energy of a comet of mass m around a star of mass M if it is in elliptical orbit that has a pericenter at a distance R and an apocenter at 4R? What is the total energy of the comet?
Two sinusoidal waves, identical except for phase, travel in thesame direction along a string producing a net wavey'(x, t) = (4.0 mm) sin(24x - 4.0t + 0.800 rad), What is the phase difference between them
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
If you are cruising down the road at 50 mph and a policeman with a radar gun (wavelength 1 cm) reflects radar light off your bumper, what wavelength of radar light does he get back
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