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A flat (unbanked) curve on a highway has a radius of 220.0 m. A car rounds the curve at a speed of 25.0 m/s. (a) What is the minimum coefficient of friction that will prevent sliding? (b) Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you found in part (a). What should be the maximum speed of the car so it can round the curve safely?
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estimate how many electrons there are in your body .. make any assumptions you feel are necessary .. but clearly state what they are ( hint : most of the atoms inyour body have equal numbers of electrons , protons and neutrons ) what is the combined charge of all these electrons ?
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lightining occurs when there is a flow of electric charge betwwen the ground and the undercloud .. the maximum rate of charge flow in lightining bolt is 20 this lasts for 100 s
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Two crates connected by a rope lie on a horizontal surface. Crate A has mass mA and crate B has mass mB.
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