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Assuming the energy deposited is absorbed by the growth, find the amount of energy delivered per unit mass.
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The laws of refraction and reflection are the same for sound as for light. The speed of sound is 340 m/s in air and 1510 m/s in water. If a sound wave traveling in air approaches a plane water surface at an angle of incidence of 9.8 , what is the angle of refraction?
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A hollow sphere is rolling along a horizontal floor at 4.50 when it comes to a 40.0 incline.
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test banks
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615 nm light is incident on a single slit that is .25 mm in width. The observing screen is 3 m away. find the position of the first dark fringe and the width of the central bright fringe
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When a wood shelf of mass 6.1 kg is fastened inside a slot in a vertical support, the support exerts a torque on the shelf.
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Figure 11-34 gives the speed v versus time t for a 0.901 kg object of radius 1.72 cm that rolls smoothly down a 35.0 ramp. What is the rotational inertia of the object?
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The advantages and disadantages of using wiretaping and cameras in the criminal justice system
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The magnetic field of earth at a certain location is directed vertically downward and has a magnitude of 50microT. A proton is moving horizontally torward the west in this field wtih a speed of 6.20x10^6 m/s . Find the direction and magnitude of magnetic force the field exerts on the proton?
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The ammeter shown in Figure P28.20 reads 2.60 A. Find I1, I2, and .
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- The Earth’s rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2000 the Earth takes about 0.548 s longer to complete 365 revolutions than it did in the year 1900.
- (a) What is the average angular acceleration of the Earth?
- (b) If this average acceleration remains constant, in what year will the Earths rotation come to rest?
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- A spherical balloon is made from a material whose mass is 3.00-kg. The thickness of the material is negligible compared to the 1.5-m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305-degrees K and just floats in the air, neither rising nor falling. The density of the surrounding air is 1.19-kg/m^3. Find the absolute pressure of the helium gas
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