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A physics professor demonstrates the Doppler effect by tying a 610 Hz sound generator to a 0.9 m long rope and whirling it around her head in a horiztonal cicle at 100 rpm. What are the highest and lowest frequencies heard by a student in the classroom?
At what speed does the speed of the ball change relative to the cab floor (sign and magnitude)?
What is the electric flux through the circle when its face is perpendicular to the field lines?
A car with a mass of 800 kg moves up a hill inclined at an angle 15? to the horizontal with a constant acceleration of 2.5 ms?2. Find the force of the engine
The closest star to our solar system is Alpha Centauri, which is 4.30 light years away. How much time would elapse on a clock on the Earth
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
Let a coil wand pendulum start swinging with an angle of 30 degrees with the vertical. Calculate the heights of the pendulum at the start and final positions
A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 105 m below
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
A 1051 kg coasts down a hill 40 m high with its engine off and the driver's foot pressing the brake pedal. How much energy was converted into heat on the way down
For a particular RLC series circuit, the capacitive reactance is 9.75 ?, the inductive reactance is 42.7 ?, What is the maximum voltage across the circuit?
A 25 kg trunk strikes the ground with a speed of 12.5m/s. if no energy is lost from air resistance, what is the height from which trunk fell.
A standing wave is in a open end tube. The tube length is 1.80m, determine the fundamental frequency
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