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According to present theories of light, in some experiments light seems to be: 1)composed of particles which can neither be created nor destroyed. 2)a particle whose quantized energy depends on its velocity. 3)a wave that moves from one place to another if there is material to vibrate. 4)deflected due to repulsion from very massive objects. 5)none of the above.
the italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm. 7. bob bought a
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
Electric breakdown (sparks) occur in air if the electric field reaches 3 × 106 N/C. How far must a free electron move under the influence of the above electric field
A child is twirling a 0.012 kg ball on a string in a horizontal circle whose radius is .100 meters. The ball travels once around the circle in .500 seconds.
A 82 kg student sits on a chari which is soley supported by a solid 0.92 meter long steel rod 0.98 cm in diameter
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp
what will be observed on the screen? a fuzzy image is visible no image is visible on the screen a clear image slightly smaller than the original image is visible a clear image slightly larger than the original image is visible.
Find the minimum initial speed of a projectile in order for it to reach a height of 1961 km above the surface of the earth
Two people stand 3 m away from a large plane mirror and spaced 3.8 m apart in a dark room. At what angle of incidence should one of them shine a flashlight on mirror so that the reflected beam directly strikes the other person.
A grinding wheel of radius 0.35 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75N · m. Find the magnitude of the friction force.
Two circular metal plates with diameter 18 cm and separated by a distance of 2mm are connected in series with a 10 cm long cylindrical piece of material with diameter 1 mm and a 10 v battery. FIND the capacitance of the two circular metal plates wi..
A typical red blood cell subtends an angle of only 1.91E-5 rad while viewed at a person's near-point distance of 25cm. Assume a red blood cell is examined with a compound microscope in which the objective and eyepiece are separated by a distance o..
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