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Nicholas and Louis have an unknown clear solid that has a 36 degree critical angle for total internal reflection. What is the index of refraction of the material?
a 3.0 resistor an 6.0 resistor and a 9 resistor are connected in series with a 20 v battery. a what is the equivalent
If the electric charge did not exist and electrons were bound to protons by the gravitational force to form hydrogen, derive the corresponding expressions for ao and En and compute the energy and frequency of the light emitted in the n=2 to n=1 tr..
The coefficient of kinetic friction between her skis and the snow.
A horizontal force of 130 Newton is required to push a bookcase across a floor at a constant velocity. Find how much is the friction force that acts on the sliding bookcase
Cliff and Will are carrying a uniform 2.0m board of mass 74kg. Will is supporting the board at the end while cliff is 0.6m from the other end, Find the normal forces exerted by Cliff and Will
A laptop computer communicates with a router wirelessly, bymeans of radio signals. The router is connected by cabledirectly to the Internet. The laptop is 8.1 m from therouter, and is downloading text and images from the internet at anaverage rate..
An object has an initial velocity of 7.4 m/s. The object accelerates at a constant rate of 3.89 m/s2 for 2.8 seconds. What is the displacement of the object
An emf is induced in a conducting loop of wire1.30 {\rm m}long as its shape is changed from square to circular. Find the average magnitude of the induced emfif the change in shape occurs in 4.37 {\rm s}and the local 0.127-{\rm T}magnetic field is ..
Two springs, with force constants k1 and k2, are connected in series, as shown in the figure. How much work is needed to stretch this system a distance x from the equilibrium position?
A 257 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. Obtain what is the tension in rope
You are given a pair of Hemholtz coils, each with radius R = 12 cm, containing 140 turns of wire in each coil. Calculate the magnetic field produced in the center of the space between the coils
A certain automobile engine delivers 2.24 104 W (30.0 hp) to its wheels when moving at a constant speed of 21.0 m/s ( 47 mi/h). What is the resistive force acting on the automobile at that speed?
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