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A 175 gram ball on the end of a string is revolving uniformly in a horizontal circle of radius 0.500 m. The ball makes 2.00 revolutions in a second. (a) Decide the speed of the ball. (b) Decide the ball's centripetal acceleration. (c) Determine the force a person should exert on opposite end of the string.
objects with masses of 125 kg and a 425 kg are separated by 0.390 m.a find the net gravitational force exerted by these
A surfer is riding a wave. Suppose she starts at the top of the wave with a speed of 1.87 m/s, how much work is done by the (non-conservative) force of the wave
Four point charges have the same magnitude of 2.4 x ten-12C and are fixed to the corners of a square 4.0 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the ce..
A carpet is to be installed in a room of length 8.74 m and width 5.8 m. Find the area of the room retaining the proper number of significant figures
description the following assignment must be submitted to your instructor for evaluation. write out your solution using
Richard is driving home to visit his parents. 140 of the trip are on the interstate highway where the speed limit is 65. How many minutes does he save
A projectile is launched horizontally, to the left, at 50.0m/s off of a cliff that is 80.0 meters tall. Ignore air friction and take g = 10.0 m/s/s (instead of 9.8). Where in the projectile’s motion does it have its minimum speed?
A 2.00-liter aluminum cylinder at 5°C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 59°C, how much gasoline spills out.
A 1000N beam is loaded with a 2000N filing cabinet and supported by two cables. If the beam is 8 meters long and the filing cabinet is 2 meters from the left cable, what is the tension force in each cable? total of both tension? tension in left cable..
A 2.2 m long uniform plank is supported by two bathroom scales, one at either end. Initially the scales each read 100.0 N. How far is his center of gravity from the soles of his feet
Determine the velocity as a function if time for a raindrop of mass m = 4x10-6 kg that reaches a terminal velocity ofvt = 6m/s, for which the resistive force is given by f = bv where bis the proportionality constant. Evaluate the constant b
A 0.45 V potential difference is maintained across a 1.3m length of tungsten wire that has a cross-sectional area of 0.67 mm2 and the resistivity of the tungsten is 5.6 ×10−8 · m. What is the current in the wire?
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