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A point source of light is 82 centimeter below the surface of a body of water. Obtain the diameter of the largest circle at the surface through which light can emerge from the water (nw = 1.33).
At a recent rock concert, a dB meter registered 110 dB when placed 2.00 m in front of a loudspeaker on the stage. What was the power output of the speaker
The absorber surface of a solar collector is made of aluminum coated with black chrome a s = 0.87 and e ir = 0.09). Solar radiation is incident on the surface at the rate of 600 W/m2. The air and the effective sky temperature are 25 and 15°C respe..
two parallel metal plates have area a255cm2 and are sepearated by l 0.50 cm. they have a potential difference of 0.25v.
When a 6.0 µF capacitor is connected to a generator whose rms output is 26 V,the current in the circuit is observed to be 0.40 A. What is the frequency of the source?
questionthe cornea of the eye has a radius of curvature of approximately 0.50 cm and the aqueous humour behind it has
The distance among the objective and eyepiece lenses in a microscope is 22cm. The objective lens has a focal length of 5.5mm. What eyepiece focal length will give the microscope an overall angular magnification of 300?
q1. a plane is flying horizontally with speed 198 ms at a height 6640 m above the ground when a package is dropped from
a mass of 10 kg was hung vertically from a spring. the system obtain equilibrium with a stretched length of 30 cm.a
A 0.1kg ball is attached to a string and whirled around in a circle overhead, What is the maximum speed the ball can have when the radius of corcle is 1m
Compute the period of a 0.123-nmX-ray. An object is placed halfway among a concave mirror and its focal point. Discover the resulting magnification. A 3-cm-tall object is located 8 cm in front of a concave mirror that has a 20-cm radius of curvature...
A wave travels on a string at 60m/s. A second string of 20 percent greater linear density has the same tension applied as in the first string. What will be the resulting wave speed in the second string?
Suppose that the amplitude and frequency of the transverse wave, Find the total vertical distance (in cm) through which the colored dot moves in 3.8 s
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