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Q. White light is incident normally on a thin soap film (n = 1.33) suspended in air. What are the two least thicknesses that will constructively reflect yellow (l = 585 nm) light?
Q. A string 1.50 m long will break if the tension in it exceeds 2X10^2N. How fast (in m/s) can a rock of mass 1.50 kg be whirled in a circular horizontal path if the string is not to break? Assume the rock moves on a smooth horizontal surface (No friction).
Points A and B have electric potentials of 320 and 160, respectively. When an electron released from rest at point A arrives at point C, its kinetic energy is.
Suppose a 64.0 kg boy and a 48 kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
Determine its average velocity for this trip. conclude the car's displacement.
What is constant acceleration
What are new charge on spheres - Two insulated charge Cu spheres A and B OF IDENTICAL size have charge qa and -3qa
find the coefficient of linear expansion for the material of which the rod is made.
Though slow on land, the leatherback turtle holds record for the fastest water speed of any reptile: 9.78 m/s. It is also among the largest of reptiles. Assume the largest leatherback yet discovered were to swim at the top leatherback speed. If its k..
How much of the rope must be pulled. Find the magnitude of the magnetic field at the point x = 0, y = 0.7 m, z = 0.
A hotel elevator ascends 190 m with a least speed of 4.0 m/s. Its acceleration and deceleration both have a magnitude of 1.4 m/s2.
How many revolutions per minute would a 29 {rm m}-diameter Ferris wheel require to make for the passengers to feel "weightless" at topmost point.
A suitcase weighing 228N is at rest on the floor of a hotel lobby. The co-efficient of static friction between the suitcase and the floor is 0.49, and the coefficient of kinetic friction is 0.313. With what least amount horizontal force must a bel..
The coefficient of kinetic friction between her skis and the snow.
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