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Two equally charged insulating balls each weigh 0.10 g and hang from a common point by identical threads 30 cm long. The balls repel each other so that the separation between their centers is 6.8 cm. What is the magnitude of the charge on each ball? Answer: 7.59×10-9 C I know this is the answer, but i don't know how they got it. Please show me a simple way. Thanks
Sketch the shear force and bending moment diagram and Verify that the support reactions are correct.
A car is traveling 17 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.5 m/s2. How far does the car go before it stops.
hanging mass has a mass, m = 19g, the wheel has a radius, R = 0.10m, and the wheel and axle has a moment of inertia, find the acceleration of the hanging mass
The traces of the rain on the side windows of the car make an angle of 60.0 with the vertical. Find out the velocity of the rain with respect to the following reference frames.
A spacecraft is in orbit around a planet. The radius of the orbit is 3.2 times the radius of the planet, What is the period of the spacecraft's orbit
Find out the velocity of the plane relative to the earth.
A daredevil on the motorcycle leaves the end of a ramp with a speed of 36.0 m/s. If his speed is 34.20 m/s while he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. In meters
How much current is contained within the width of a thin ring concentric with the wire if the ring has the radial width of 12.0 µm and is at a radial distance of 1.2 mm.
Suppose you walk 3.97 m down a 30° incline while holding a 1.05 kg block. The 3.97 m distance is measured as a displacement along the incline; not as a vertical change in height. How much work do you do on the block as you walk down the incline.
A photoelectric-effect experiment determines a stopping potential of 1.93 eV while light of 200 nm is used to illuminate the cathode.
At what angle should the highway engineer bank. What is the magnitude of the acceleration.
You wish to boil 1.1 kg of water, which has a specific heat capacity of 4186 J/kg-K. The water is initially at room temperature (293 K). Water boils at 373 K. How much energy must be added to the water by heating it in order for it to start boiling
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