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Q. Three charges q = 0.380 C form an equilateral triangle, 1.60 m on a side. Using energy that is supplied at the rate of 0.65 kW, how many days would be required to move one of the charges to the midpoint of the line joining the other two charges?
Q. A mass of 2.6 kg is connected to a horizontal spring whose stiffness is 7.5 N/m. When the spring is relaxed, x = 0. The spring is stretched so that the initial value of x = +0.18 m. The mass is released from rest at time t = 0. Remember that when the argument of a trigonometric function is in radians, on a calculator you have to switch the calculator to radians or convert the radians to degrees.
The density of free electrons in gold is 5.90 x 10^28 m-3. The resistivity of gold is 2.44 x 10-8 at a temperature of and the temperature coefficient of resistivity is 0.004 ()-1. A gold wire, 1.30mm in diameter and 27cm long, carries a current of..
A 78-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches base.
In a head on collision, a car stops in .10 seconds from a speed of 14 meters per second. The driver has a mass of 70 kg, and is, fortunately, tightly strapped into his seat. What force is applied to driver by his seat belt during that fraction of ..
A weather balloon rises by the atmosphere, its volume expanding from 4.4m^3 to 10m^3 as temperature drops from 17 Degrees C to -13Degrees C.
Evaluate the stability of of Na in the NaCl structure
Two carts with masses of 12.5 kg and 4.5 kg, respectively, move in opposite directions on the frictionless horizontal track with speeds of 8 m/s and 5 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the..
What is the current in the circuit when all six lamps and the heater are turned on? If the circuit has a fuse which will melt if the current exceeds 12 A, will fuse melt.
W hat is the downward acceleration of the blue spool
A paperweight is made of a solid glass hemisphere with index of refraction 1.50. The radius of the circular cross section is 4 cm. The hemisphere is placed on its flat surface, with the centre directly over the 2.5 mm long line drawn on a sheet of ..
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of 2.2 m2, while surface 2 has an area of 3.5 m2.
Forming an equation.
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
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