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Two small spheres hang in equilibrium at the bottom ends of threads, 40.0 cm long, that have their top ends tied to the same fixed point. One sphere has mass 2.40 g and charge +300 nC. The other sphere has the same mass and charge +200 nC. Find the distance between the centers of the spheres.
Two particles with charges +5e and -5e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.78 x 10-13 m apart
Illustrate what is the concentration of sodium and chloride ions at a distance 3 angstroms from protein surface.
A car moves along the x-axis in the positive direction. Find the sign (+,-) of the velocity and acceleration of the car for each situation: 1. The car moves AWAY from the origin and gets FASTER 2.
Density-Gravity Problem: a) Planet Vulcan has twice the mass of Earth and the same radius. What are its volume, density and surface gravity compared to Earth?
What would be the speed of the boxes while box B has fallen a distance of 0.5m? The coefficient of kinetic friction between box A and the surface it slides on is 0.20. Make use of conservation of energy.
Explain how much work does the gravitational force do on the block as the block travels from point P to (a) point Q and (b) the top of the loop?
Find the electric field at the position of the electron. What is the potential difference in volts between the plates.
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
18th Century cannon had a maximum range of 1.10 miles when fired on level ground. Find the velocity of the cannonball as it leaves the cannon
a charged particle is injected at 211 m/s into a 0.0627- T uniform magnetic magnetic field perpendicularly to the field, What is the charge to mass ratio of this particle
If a 500.0g cart had its velocity change from 1.65 m/s to 1.23 m/s over a period of 2.50 seconds. Calculate and record the force acting
When point charges q1 = +1.7 ?C and q2 = +8.7 ?C are brought near each other, each experiences a repulsive force of magnitude 0.30 N
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