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Light has a wavelength of 299.3 nm and a frequency of 7.403 × 1014 Hz when traveling through a certain substance. What is the refraction index of this medium? Use 2.998 × 108 m/s for the speed of light in a vacuum.
The heating element of a simple heater consists of a 2.0--long, 0.70--diameter nichrome wire. The heating element of a simple heater consists of a 2.0--long, 0.70--diameter nichrome wire.
Calculate the y-component of the magnetic force.
A styrofoam cooler (k = 0.030 W/(m·K)) has outside dimensions of 0.270 m by 0.230 m by 0.280 m, and an average thickness of 2.6 cm. About how long would it take for 1.60 kg of ice at 0 °C to melt in the cooler if the outside temperature is 30.0 °C..
Copper at 20C has a resistivity of 1.72x10^-8 ohm-m. A potential difference of 2.0V is applied to a 1.00m long copper wire of radius 0.200mm. Find the resistance of the wire
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
What is the angular velocity of the disk. If a single bit requires 5 µm of length along the motion direction, how many bits/second can the writing head write when it is 3.0 cm from the axis? display all work and explanations.
An engine does 20000 J of work and rejects 6120 J of heat into a cold reservoir whose temperature is 285 K. What would be the smallest possible temperature of the hot reservoir.
An advertisement claims that a particular automobile can "stop on a dime." What net force would actually be necessary to stop an automobile of mass 920kg traveling initially at a speed of 56.0km/h in a distance equal to the diameter of a dime, whi..
A charge of ?3.00nC is placed at the origin of an xy-coordinate system, find the x and y components of the total force and Find the direction of this force
Three equal positive point charges of magnitude Q = 6.00? C are located at three corners of a square of edge length d = 2.6 cm. A negative charge -18.00? C is placed on the fourth corner.
Two friends, Al and Jo, have a combined mass of 164kg. At the ice skating rink, they stand close together on skates, at rest and facing each other.
Displacement is which of the following types of quantities.
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