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Research suggests that the electric fields in some thunderstorm clouds can be on the order of 10 kN/C. Calculate the magnitude of the electric force acting on a particle with 8 excess electrons in the presence of a 11.5 kN/C field.
A car is traveling 23 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.0 m/s2. Explain how far does the car go before it stops?
a girl and her bicycle have a total mass of 40 kg. at the top of the hill her speed is 5.0 m/s. what is her speed at the bottom
Gayle runs at a speed of 8.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 23.0 m. What is their speed at the bottom of the hill
A 4.1-kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket
If a 62.6 kg runner dissipates a power of 60.9 W during a race, explain how fast is the person running? Assume a running step is 1.50m in length
cart is propelled over an xy plane with acceleration components ax = 4.5 m/s2, what is the velocity of the cart when it reaches its greatest y coordinate
A horizontal force of 35_N is used help push an 44_kg box up a 13_meter incline. What is the work done by this applied force
Coherent light with wavelength 599nm passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00m from the slits. The first-order bright fringe is a distance of 4.84mm from the center of the central b..
Given you have a 1000 kg automobile with an Otto cycle engine, compression ratio of 10. estimate the real engine losses due to friction and drag
Damped forced oscillations, A single stage vibration isolation system consists of a heavy granite slab (100 kg) sitting on legs which act as a vertical damped spring. The "Q" (Quality Factor) of the system is 8.0, and the velocity damping coeffici..
A 255 kg piano slides 4.2 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (Fig. 6-36). The effective coefficient of kinetic friction is 0.40 Figure 6-36
An old wooden telephone pole with a single cross member was blown off center during a recent storm. To temporarily stabilize the telephone pole, a repair crew has attached a cable from the end of the cross member
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