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Q. A 59kg man walks from one end of a 3.2m 160kg boat to the other. if there is no friction between the boat and the water and the man's starting position is x=0, what is the final position of the man and the final position of the center of the boat?
Q. A charge of 3 C is placed at the point (4.0 m, 0.0 m) and a charge of 3 C is placed at the point (3.0 m, -3.0 m) . What is the magnitude of the electric field (in N/C) at the point (-2.0 m, 3.0 m)?
At what height above the surface of the earth does the balloon have a velocity of 8.10 m/s.
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
If a system in equilibrium with two masses m1 and m2 are placed at distances d1 and d2 from the fulcrum, then f1 d1= f2 d2. Is this the same as saying that m1 d1= m2 d2? Give details.
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
Describes possible scenarios among following
The temperature of the surface of a certain star is 7500 K. Most hydrogen atoms at surface of the star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could ..
A cardiac pacemaker can be affected by the static magnetic field as small as 1.7 mT. How close can a pacemaker wearer come to a long, straight wire carrying 19 A.
A rotating cylinder about 25 km long and 9 km in diameter is designed to be used as a space colony. with what angular speed must it rotate so that residents on it would experience the same acceleration due to gravity as on earth? In radians per se..
What is effectiveness of battery as an energy storage device
A box weighing 77.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exert on the box if the weight hanging on the other side of the pulley ..
Two plane mirrors facing each other are 10 m apart. A woman stands 3 m from one of the mirrors and looks at the mirror and sees two distinct images. How far are these images from the woman.
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
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