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A small sphere whose mass is 0.60 g carries a charge of 3.0 x 10-9 C and is attached to one end of a silk fiber 8.00 cm long. The other end of the fiber is attached to a large vertical conducting plate, which has a surface charge of 25.0 x 10-6 C/m2 on each side. Find the angle the fiber makes with the vertical plate when the sphere is in equilibrium.
A thin rod (length = 1.816 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. compute the magnitude of the angular acceleration of the rod
A 990-kg sports car collides into the rear end of a 2100-kg SUV stopped at a red light. The bumpers lock, the brakes are locked, What was the speed sports car at impact
A 9.05 kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 77.5 kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
When two resistors are connected in a parallel configuration the voltages across each are the same, What are the currents through these resistors
A diverging lens (f = â€"12.0 cm) is located 23.0 cm to the left of a converging lens (f = 35.0 cm). Determine the distance of the final image relative to the converging lens
q1. starting from rest a basketball rolls from the top of a hill to the bottom getting a translational speed of 7.36
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.41 × 10-11 m. Determine the magnitude..
An airplane is flying in a horizontal circle at a speed of 133.3 m/s. Banked for this turn, What is the radius of the circle in which the plane is flying
A 48.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.44 102 m/s from the top of a cliff 152 m above level ground, How much work has been done on the projectile by air friction
You drop a stone into a deep well and hear it hit the bottom 2.60 s later. This is the time it takes for the stone to fall to the bottom of the well.
Practical steam engines utilize 475°C steam, which is later exhausted at 300°C. What is the overall efficiency of the two engines
Two long, parallel wires separated by 3.00 cm carry currents in opposite directions. The current in one wire is 1.20 A, Is the force attractive or repulsive
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