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Q. Two charged dust particles exert a force of 3.2 multiplied by 10-2 N on each other. What will be the force if they are moved so they are only one-third as far apart?
Q. A rectangular barge, 4.0 m long and 1.5 m wide, floats in fresh water. (a) Find how much deeper it floats when its load is a 380-kg horse. (b) If the barge can only be pushed 15 cm deeper into the water before water overflows to sink it, how many 380-kg horses can it carry?
A loudspeaker of mass 22 {rm kg} is suspended a distance of h = 2 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of l = 3.90 {rm m}.
Find out a magnitude and direction of the electric field
What is coefficient of friction between chair and floor
How much heat does it take to increase the temperature of 4.50 moles of a diatomic ideal gas through an amount 40 if the gas is held at constant volume? The gas molecules can translate and rotate but not vibrate.
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with amplitude of 20.0 cm.
Note the gravitational acceleration of equatorial sea level is g = 32.0088ft/s^2 and that its variation is 0.003ft/s^2/ 1000ft ascent. find the height in miles above its point for which g = 30.504 ft/s^2 and what is the weight of a 180lb man on top o..
How fast is the roller coaster moving at the top of the loop
Unpolarized light with an intensity of 275 W/m2 passes by the two polarizers whose transmission axes are at an angle of 30.0° with respect to each other. What is an intensity of the light transmitted through both polarizers.
Calculate the pressure at the center of pipe A. Suppose T = 10?C.
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has the length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from bottom of the spring oscillates vertically at a frequency of 3.00 rm{Hz}.Ignoring the mass..
An elevator is initially moving upward at a speed of 11.18 m/s. The elevator experiences the constant downward acceleration of magnitude 4.44 m/s2 for 2.87 s.
An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50 r, compute the magnitude of the force between the two objects.
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