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Question: A bar has a 20 N weight at one end, as shown in Figure 7.4.4. You have a weight of 15 N to hang somewhere on the bar so that the bar is in equilibrium. Where would you hang the 15 N weight on this bar? Consider the bar to have no mass.
In a graphing calculator, there are four AAA batteries, which together provide a potential difference of 1.5 V and a total of 6.0 W·h of energy. what was the average current through the calculator
Consider a point charge q located outside a closed surface as sketched in blue in the figure below. The electric field lines from the charge penetrate the surface. What is the total electric flux through this surface?
A 6 kg object sits on a horizontal surface with coefficient of friction = .8. What is the minimum force (not necessarily horizontal) necessary to make the object slide?
You stand in the earth's magnetic field, directly facing its horizontal component (in other words, facing magnetic south). Find the outward flux through your body back surface
A lawn roller in the form of a solid uniform cylinder is being pulled horizontally with a horizontal force B applied to an axle during the center of the roller. The roller radius 0.59 m and mass 48 kg.
The density of a 5.0-m long rod can be described by the linear density function ?(x) = 125 g/m + 14.5x g/m2. Determine the total mass of the rod
An 9.00-cm-diameter, 390g sphere is released from rest at the top of a 1.50-m-long, 15.0 degree incline. find the sphere's angular velocity at the bottom of the incline
A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. what is the actual voltage supplied by the battery
Is the collision completely elastic
Sarah throws a ball too hard so it is over Julie's head when it reaches Julie's horizontal position, What is the speed of the ball when it leaves Sarah's hand
A weight of unknown mass is suspended from a steel wire that is 1.27 m long and has a diameter of 0.56 mm; Find the mass of the weight
It is desired to construct a solenoid that will have a resistance of 6.00 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.80 A. estimate the length the solenoid should have
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