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A positive charge of Q = 5.40 uC is fixed in place. From a distance of ri = 4.20 cm a particle of mass m = 5.50 g and charge q = +4.00 uC is fired with an initial speed of v = 68.0 m/s directly toward the fixed charge. What is the minumum distance rf between the two charges?
A 1.0 mm diameter mall bearing has 2.0 x 10^9 excess electrons. What is the ball bearing's potential
In a church choir loft, two parallel walls are 5.70 m apart. The singers stand against the north wall. What width of the north wall can she see
A block of mass 3.0kg hangs from one end of a cord, while the other end is wrapped around a uniform wheel of radius 30cm and moment of inertia 0.80kgm2. Find the linear acceleration of the block
The cockroach finds a bread crumb on the rim and, of course, stops. What is an angular speed of the lazy Susan after the cockroach stops.
A 0.880 m long brass pendulum experiences a 20.0°C temperature increase. Find the ratio of the change in period to the original period
The inductance of a solenoid with 450 turns and a length of 53 cm is 5.5 mH. What is the cross-sectional area of the solenoid
a girl of mass 40 kg is in a rocket ship an altidude of 35 km above the surface of the earth. Find the gravitational force on the girl by the earth
Using kinematic equations prove that if two balls are released simultaneously from a table, one with zero velocity and other with horizontal velocity, they will both reach ground at the same time.
You found the distance that you will cover at the same time as braking. You can utilize the expected amount of time for braking to check your answer for distance.
The drawing shows two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.047 kg/m. What is the current in each wire
A production line inspector wants a mirror that produces an upright image within magnification of 7.4 when it is located 15 mm from a machine part.
A molecule of DNA (deoxyribonucleic acid) is 2.08 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
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