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You have a ball on a wire that is twirled in a circular orbit with a radius of 3.3 m, and the centripetal force acting on the ball, that has a mass of 47 kg, is 353 N. What is the speed of the ball in orbit?
Estimate the pressure exerted on a floor by (a) one pointed chair leg (60 kg on all four legs) of area=0.020 cm^2, and (b) a 1500-kg elephant standing on one foot (area=800 cm^2).
Find the size of the net force produced by a 7 N and an 12 N force in each of the following arrangements. (a) The forces act in the same direction. N= (b) The forces act in opposite directions. N= (c) The forces act at right angles to each other. ..
A spherical water drop 1.20μ m in diameter issuspended in calm air owing to a downward-directed atmosphericelectric field E = 442 N/C. What is the weight of the drop
A series RLC circuit has R=2.6?, L=9.5 mH, C=2.45 mF, Vm=110V, and ?=377 rad/s. find the phase difference between the voltage and the current
two lenses one converging with a focal length equal to 10 cm and another diverging with a focal point of -15 cm are
An aircraft has a lift-off of 120km/h. (a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 240m (b) How long does it take the aircraft to become airborne
A 3.00-UF capacitor is fully charged by a 12.0-V battery. The two ends of this fully charged capacitor are then connected to the two ends of a 6.0-mH inductor, find the maximum current and rms current
You are looking straight down on a magnetic compass that is lying flat on a table. A wire is stretched horizontally under the table, parallel to and a short distance below the compass needle.
A ball is thrown toward a cliff of height h with a speed of 31m/s and an angle of 60 degrees above horizontal. What was the maximum height of the ball
A block of glass with flat sides is surrounded by air. A ray of light traveling in the glass (refractive index na) is incident on the flat interface with air at the top surface of the block of glass, What is the refractive index of the glass
question a small block of mass m is given and initial speed vo up a ramp inclined at angle theta to the horizontal. it
A thin rod has a length of .25 m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. What is the angular momentum of the rod before the bug started crawling
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