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Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. The magnitude of each of the charges is 4.0 µC, and the lengths of the sides of the triangle are 4.4 cm. (b) Determine the magnitude F of the net force exerted on charge B. B is positive and points A and C are negative.
A speeding motorist traveling 100km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
Intuitively, the man will not catch the bus unless he is running fast enough. In mathematical terms, there is a constraint on the man's speed so that the equation above gives a solution for that is a real positive number.
A woman throws a ball at a vertical wall d = 3.0 m away. The ball is h = 1.5 m above ground when it leaves the woman's hand with an initial velocity of 12 m/s at 45°.
A runner of mass m = 39kg and running at 3.1m/s runs as shown and jumps on the rim of a playground merry-go-round which has a moment of inertia of 372 kg•m2 and the radius of 2 meters. Assume the merry-go-round is initially at rest, what is its final..
If the far end of the iron rod is in an ice bath at 0°C, find the rate of heat transfer passing from the boiling water to the ice bath. Suppose there is no heat loss to the surrounding air.
when jim abd rob ride bicycles, jim can only accelerate at three quarters the acceleration of Rob. Both start from rest at the bottom of a long straight road with constant upward slope. If rob takes 5.7 minutes to react the top, how much earlier s..
What is resultant force
Estimate the force P to accelerate the 80 - Ib block at 6ft/sec2 to the right.
A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 16 m/s. How much work must be done by the brakes to bring the bike and rider to a stop.
Is the momentum change identical? If not, the ball would have the larger momentum change throughout the collision with the wall?
A 240g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3J.
What is electric field in the wire
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