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Two 5 gram spheres are each suspended from a pin by a 40 cm long non-conducting thread. If the spheres are separated by 7 cm because of electrostatic repulsion, find the charge on each, knowing they are equal.
a molecule of dna deoxyribonucleic acid is 2.16 microm long. the ends of the molecule become singly ionized negative on
A ladder of length L = 2.5 m and mass m = 15.0 kg rests on a floor with coefficient of static friction ?s = 0.57. Assume the wall is frictionless. What is the minimum angle to keep the ladder from sliding
A "U" shaped tube (with a constant radius) is filled with water and oil, What is the absolute pressure in the water at the very bottom of the tube
two point charges -10nc and 16nc are held fixed a distance 0.55m apart. assume that both charges lie on x-axis for the
A 3.07 kg particle has a velocity of (3.10 i hat - 4.04 j hat) m/s. Find the magnitude and direction of its momentum
if you close the switch which quantity reaches its maximum value first current in the circuit or voltage across the
An organ pipe is 2.0 m long. Assume the pipe is cylindrical withone closed and one open end. what is the wavelength of the 2nd harmonic?
Radius=10m Vt=12.3 If at point A the track exerts a force on the car that is 2.92 × 10^4 N greater than the car's weight, what is the mass of the car.
Concept Simulation 3.2 reviews the concepts that are important in this problem. How much time does the ball spend in the air
If it started falling from an upright position, what was the initial angular acceleration of the structure? suppose that the bottom did not slide across the floor and that it did not fall out of plane; that is, during the fall, the structure remained..
Five charges are placed in a closed box. Each charge (except the first) has a magnitude which is twice that of the previous one placed in the box. All charges have the samesign and (after all the charges have been placed in the box) the net electr..
A rocket of mass 4.5x105kg is in flight. Its thrust is directed at an angle of 49.0degrees above the horizontal and has a magnitude of6.30 x 106 N. Find the magnitude and direction of the rockets acceleration. Give thedirection as an angle above t..
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