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A pair of in-phase stereo speakers is placed side by side, 0.61 m apart. You stand directly in front of one of the speakers, 0.8 m from the speaker. What is the lowest frequency that will produce constructive interference at your location?
The two stars in a binary star system have masses 1.9 x 10^30kg and 6.1 x 10^30kg. What is the speed of the heaviest star
A car goes round a flat curve at a speed of 32 ms-1. If the radius of the curve is 200 m, find the minimum value for the coefficient of friction so that the car can go around the curve without skidding.
Two identical guitar strings are prepared such that they have the same length (2.43 m) and are under the same amount of tension. find the wave propagation speed on the guitar strings
A group of charges is found in space. At a distance of 100 cm from the group of charges, the total electric flux through a Gaussian sphere is found to be 517 N·m2/C. What is the potential along the Gaussian sphere
A thin film with index of refraction n = 1.48 is placed in one arm of a Michelson interferometer, perpendicular to the optical path. what is the film thickness
A ball is thrown at an angle of 30.9 degrees above the horizontal at a speed pf 8.77 m/s. What is the vertical component of the ball's velocity
A certain circuit consists of an inductor of 50 mH in series with a resistor of 180 ?. How long will it take for the current to fall to 7.6 A
Find out the angle the string makes with the vertical.what is the maximum voltage that can be applied across the whole network.
A spring is hung from the ceiling. A 0.322 -kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
A 0.360 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball.
An Australian emu is running due east in a straight line at a speed of 17.5 m/s and slows down to a speed of 12.2 m/s in 4.1 s. (a) What is the direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the ..
A person driving her car at 53.0 km/h approaches an intersection while the traffic light turns yellow. She knows that the yellow light lasts only 2s before turning to red.
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