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A 42.0-cm diameter wheel, consisting of a rim and six spokes, is constructed from a thin rigid plastic material having a linear mass density of 25.0 g/cm. This wheel is released from rest at the top of a hill 53.0 high. 1. How fast is it rolling when it reaches the bottom of the hill? 2. How would your answer change if the linear mass density and the diameter of the wheel were each doubled?
A fathom is a method for measuring lengths, usually reserved for measuring the depth of water. what is the distance in fathoms
A high-voltage transmission line with a resistance of 0.345 ?/km carries a current of 1.45 kA. What is the power loss due to resistance in the line
A banked circular highway curve is designed for traffic moving at 67km/h. The radius of the curve is 209 m. Traffic is moving along highway at 48km/h on a rainy day.
A balloon is initially stationary and full of air. The air in the balloon has a mass of 2 g. What speed does the balloon have
During this process the arrow's deceleration has a magnitude of 1600 and the block's acceleration has a magnitude of 450. Explain how long does it take for the arrow to stop moving with respect to the block?
you are on a plane that leaves DIA and flies 170 km at 68 east of north and then changes direction to fly 230 km at 48 south of east, after which it makes an emergency landing in a pasture next to a large herd of buffalo.
A soft drink (mostly water) flows in a pipe at a beverage plant with a mass flow rate that would fill 220 0.360-L cans per minute. At point 2 in the pipe, the gauge pressure is 155 kPa and the cross-sectional area is 8.00 cm2. At point 1, 1.35 m a..
A simple pendulum consists of a small object of mass m (the "bob") suspended by a cord of length l of negligible mass. A force F is applied in the horizontal direction (so F is Fi), Determine the work done by the gravitational force on the bob
Two concentric spheres of radii a and b> a have equal and oppposite charge Q when the potential diffrence between them is V. What is the capacitance of the spheres
A playground is on the flat roof of a city school, 7.00 m above the street below. The vertical wall of the building is 8.00 m high, forming a 1.00 m high railing around the playground. Find the speed at which the ball was launched
A 28 cm tall object is placed in front of a concave mirror with a radius of 33 cm. The distance of the object to the mirror is 84 cm. Calculate the focal length of the mirror. Calculate the image distance. Calculate the magnification of the image ..
A copper cable is designed to carry a current of 400.00 A with a power loss of 2.00 W/m. What is the required radius of this cable
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