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1. The mass of an object is 332 g, and its volume is determined to be 25 cc. What is the mass density of the object?
Object A, which has been charged to + 29.2 nC, is at the origin. Object B, which has been charged to - 28.9 nC, is at ( x,y ) = ( 0.0;{rm cm},; 1.50 cm ).What is the y-component of force (vec{F}_{rm A ; on ; B})_{rm y} on B due to A.
The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.
How many times more light is gathered by a single Keck telescope, whose mirror is equivalent in area to that of a circle 10 m in diameter, than by the Palomar Hale telescope, whose mirror is 5 m in diameter, in any given interval of time?
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What sort of interference does the person sense.
A baby elephant is fixed in a mud hole. To help pull it out game keepers use a rope to apply a force A as part a. By itself, though, force A is insufficient.
What is the radius r of the iron ball?
A canoe has a velocity of 0.54m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.52m/s east relative to earth.
An object is thrown upward with a speed of 14 m/s on the surface of planet X where the acceleration due to gravity is 3.5 m/s2
Two sounds differ in intensity level by 4.62 dB. What is the ratio of the intensities of these two sounds? (Let I1 be the intensity of the first (higher) sound and I2 be the intensity of the second (lower) sound.)
Two 10 cm-diameter charged thin rings face each other, 20 cm apart. The left ring is charged to 20 nC and the right ring is charged to +20 nC. What is the electric field.
An alpha particle (m = 6.7 ´ 10-27 kg, q = +3.2 ´ 10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out an electric potential difference V..
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