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A 4.0 kg cart slides on a horizontal track and is connected by a light string over a pulley to a hanging 10 kg mass. The coefficients of friction between the cart and track are μk = 0.40 and μs = 0.65. What is the acceleration of the cart?
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A body moving with uniform acceleration has a velocity of 18.9 cm/s when its x coordinate is 1.88 cm. If its x coordinate 2.68 s later is -5.03 cm, what is the x-component of its acceleration? Answer in units of cm/s2.
Questin: A research submarine has a 30-cm-diameter window that is 9.0cm thick. The manufacturer says the window can withstand forces up to 1.2*10^6N . What is the submarine's maximum safe depth in salt water? The pressur ...
Question: A ring of radius R has total charge Q. A) At what distance along the z-axis is the electric field strength a maximum? Express your answer in terms of R. B) What is the electric field strength at this point? Exp ...
Question: Part A: Find the energy U0 stored in the capacitor. Express your answer in terms of A, d, V, and ϵ0. Remember to enter ϵ0 as epsilon_0. Part B: The capacitor is now disconnected from the battery, and the plat ...
PART A: Find Leslie's average speed when she runs to the store 14 km away in 24 min Express your answer to two significant figures and include the appropriate units. PART B: How fast is this in m/s? Express your answer t ...
Question: Suppose the emf generated by a coil rotating in a magnetic field is zero at t=0 and increases to its first peak at to=0.11 ms. When is the emf first one-fourth of its maximum, in seconds? When is the emf next o ...
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