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A signal rocket explodes at a height of 200m above a ship on the surface of a smooth lake. The explosion sends out sound waves in all directions.Since the speed of sound in water (1500m/s) is larger than the speed of sound in air (340m/s), a sound wave can suffer total reflection at a water surface if it strikes at a sufficiently large angle of incidence. At what minimum distance from the ship will a sound wave from the explosion suffer total reflection?
The flux in a transformer changes at a rate of 0.4 Wb/s. The primary coil has 40 turns and the secondary coil has 500 turns
If the frequency of a system undergoing simple harmonic motion doubles, by what factor does the maximum value of acceleration change
a 3500-kg vehicle moving east at 50 kmh collides head-on with a6000kg vehicle moving west at 40 kmh. the two vehicles
a an electron has an initial velocity of 2.00 106 ms in a uniform 8.00 x 105 nc strength electric field. the field
Find The Angle In Radians. How many Arcminutes in the angle? Find the Angular speed of Moons rotation in the radian per hour units.
The tires of a car make 66 revolutions as the car reduces its speed uniformly from 86km/h to 31km/h . The tires have a diameter of 0.81m. What was the angular acceleration of the tires
Here is a displacement-time graph of an object which is not moving with simple harmonic motion. But it is still an oscillation and it has a period. period of oscillation
A 1.0-kg block of ice is initially at 0°C. Heat is added to this system, and the entropy is increased by 357.1 J/K. How much of the ice melts
A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. Determine the angle between the refracted blue and red rays in the crown glass
an image of the moon is focused onto a screen using a converging lens of focal length f 36.8 cm. the diameter of the
A stone is thrown from the top of a building by an initial velocity of 21.7 m/s straight upward, at an initial height of 54.9 m above the ground. The stone just misses the edge of the roof on its way down, as shown in the figure. Decide the time need..
If the field is directed perpendicular to the plane of the loop and the magnetic flux through the loop is 7.60 10-3 T · m2, what is the strength of the magnetic field
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