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A point charge +2.40 is held stationary at the origin. A second point charge -4.30 moves from the point = 0.175 , = 0 , How Much work is done by the electric force on q2
A parallel-plate capacitor is made from two plates 12.5 on each side and 4.70 apart. What is the capacitance of this combination
What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 6.99 m/s when going down a slope for 2.15 s
an electron in an x-ray machine is accelerated through a potential difference of 1.00 X 10^4 V, What is the kinetic energy of the electron
A student draws the ray diagram shown in the figure but forgets to label the object, the image, which arrow represents the object, and which represents the image
A rapidly spinning paddle wheel raises the temperature of 600mL of water from 21C to 25C. How much work is done in this process
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 62.4° above the horizontal. By how much does the rocket clear the top of the wall
Four charges, each of 5.00 x10^-9 C, Find the electric field at the exact center of the rectangle
A fugitive tries to hop on a freight train traveling at a constant speed of 4.8. What is the distance traveled to reach the box car
A 290-mL spherical flask contains 0.075 mol of an ideal gas at a temperature of 345 K. What is the average force exerted on the walls
A fluid with viscosity ? flows through a tube of radius R and length L. What must be the radius of the second tube
A prospector finds a solid rock composed of granite (density = 2650 kg/m3) and gold, What mass of gold is contained in the rock
The drag force on an object depends on the dimensionless drag coefficient, the density of air, the object velocity, and the frontal area of the object. By only considering units obtain a relation f
Sarah throws a ball too hard so it is over Julie's head when it reaches Julie's horizontal position, What is the speed of the ball when it leaves Sarah's hand
A ball is dropped from the top of a 48.0m high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 20.0m/s . The stone and ball co
An elevator moves downward in a tall building at a constant speed of 4.35 m/s. Estimate the highest floor from which the bolt can fall
A 42 kg child is riding on a carousel (merry-go-round) at a constant speed of 6 m/s. What is the magnitude of the change in the child's momentum |Δp with arrow| in going all the way around
The efficiency of a particular Carnot engine is 0.310, Find the temperature of the low-temperature reservoir
How much time after engine failure will elapse before the rocket comes crashing down to the launch pad?
A motorist inflates the tires of her car to a pressure of 170 kPa on a day when the temperature is -8.0°C. What is the temperature of the tires
What is the magnitude of the resultingforce (in nano-Newtons) on the 2 nC chargeat the origin? The Coulomb constant is
A vector is given by Rvec = 1.70 ihat + 2.30 jhat + 2.99 khat. Find the magnitude of Rvec
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
In open heart surgery a much smaller amount of energy will defibrillate the heart. Find the amount of stored charge
A heat engine operates between a high-temperature reservoir at 610K and a low-temperature reservoir at 320K. What is the net change in entropy as a result of this cycle?