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Three point charges have equal magnitudes, two being positive andone negative. These charges are fixed to the corners of anequilateral triangle, as the drawing shows. The magnitude of eachof the charges is 6.0 μC, and the lengths of the sides of thetriangle are 1.0 cm. Calculate the magnitude of the net force that each charge experiences.
A 70,000 kg spaceship wants to orbit a tiny black hole at a height of 10,000 m. What speed should the captain tell the computer to set the spaceship for
A soccer player kicks a rock horizontally off a 39.0-m-high cliff into a pool of water. If the player hears the sound of the splash 2.97 s later, what was the initial speed given to the rock? Assume the speed of sound in air is 343 m/s.
Two point charges Q1 = +4.50 nC and Q2 = ?2.20 nC are separated by 45.0 cm. What is the potential energy of the pair of charges
When resistors 1 and 2 are connected in series, the equivalent resistance is 19.7 ?. When they are connected in parallel, the equivalent resistance is 3.96 ?. What are the larger resistance of these two resistors
One January morning, a warm chinook wind rapidly raised the temperature in Spearfish, South Dakota, from below freezing to +11.1° C. Find the average speed at which its height would decrease
A 70Kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, decide average resistive force exerted on him by the water.
A 6.0-ft tall football player stands in front of a plane mirror. How tall must the mirror be so that the football player can see his full-sized image
Two bowling balls, each of mass 5kg, are located so that their centers of mass are 0.5m apart. What is the size of the force of universal gravitation
A television set connected to a 121 V outlet consumes 88 W of power. How long does it take for 10 million electrons to pass through the television.
Derive the speed of a satellite in a circular orbit of radius R about planet of mass M, show the connection between v and T (orbital period)
the earth completes a circular orbit around the sun in one year. what is the speed of the earth around the sun
In an X-ray tube electrons strike a tungsten target (W or "wolfram") after being accelerated through a potential difference V0. Estimate the minimum value of V0 required to observe the Kalpha peak.
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