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If 3.00 multiplied by 10-3 kg of gold is deposited onthe negative electrode of an electrolytic cell in a period of2.75 h, what is the current in the cellduring that period? Assume the gold ions carry one elementary unitof positive charge.
A uniform wooden plank of mass 15kg and total length 10m rests on two supports. Find the forces of the two supports on the plank
A motorcycle has a constant speed of 20.9 m/s as it passes over the top of a hill whose radius of curvature is 125 m. Find the magnitude of the centripetal force
suppose the radius of the ball is very small compared to other length scales in the problem. Take starting level as step 0, the next step down as step 1, and so on.
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
A charge q = -6.0 µC is moved 0.25 m horizontally to point P in a region where an electric field is 250 V/m directed vertically, as shown. What is the change in the electric potential energy of the charge?
A block of mass 4.25 kg hanging from a light string is struck by a projectile of mass 250 g. The projectile sticks to the mass after collision and the two together rises a vertical distance of 12 cm. What is the velocity of the two-mass system immedi..
The electric field at point P just outside the outer surface of a hollow spherical conductor of inner radius 15 cm and outer radius 31 cm has magnitude 465 N/C and is directed outward.
How much heat energy can created throughout motion
a block having mass m= 10kg rests on a horizontal surface. Us+.4 and Uk=.2. what is the friction force if an external horizontal force of 32N is exerted on the block
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
A proton has an initial speed of 3.5×10^5 m/s. What potential difference is required to bring the proton to rest
Find an equation for the change in wavelength of a scattered photon by Compton effect.
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