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At a certaindistance from a point charge, the magnitude of the electric fieldis 600 V/m and the electric potential is –3.00 kilo volt.What is the magnitude of the charge?
a river of width 31 m flows in a straight line the x direction with a speed of 0.21 ms. a boat is rowed such that it
Two identical point charges (q = +1.50 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.570 m. Determine the speed of the test charge when it reaches the center of the square
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
When an electron undergoes a transition from a higher to lower state in singly ionized helium, how will the energy of the emitted photon compare with the analogous transition in hydrogen?
a 75 g frisbee is thrown from a point 0.9 m above the ground with a speed of 12 ms. when it has reached a height of 1.9
A pitcher throws a baseball with a horizontal velocity of 132 ft/s (90 mph) toward home plate that is approximately 60 ft. away. What is the vertical drop of the ball
lightning occurs when there is a flow of electric charge principally electrons between the ground and a thundercloud.
the near point for your myopic uncle is 10 cm. your own vision is normal that is your near point is 25 cm. suppose you
A circular steel wire 2.00m long must stretch no more than0.25 cm when a tensile force of 400N is applied to each end of the wire. What minimum diameter is required for the wire
A wheel has angular acceleration of 3.5 rad/s2 and an inertiaof 11.5 kg per m2. what must be the net torque that is acting on the wheel
A 70kg person running at an initial speed of 4m/s jumps onto a120kg cart initially at rest. Determine the displacement of the person relative to theground while he is sliding on the cart
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
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