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A 9.66 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 × 108 m/s. The wavelength of the wave in vacuum is closest to:
212 nm311 nm248 nm280 nm342 nm
A canoe has a velocity of 0.430 southeast relative to the earth. Find the magnitude of the velocity of the canoe relative to the river
Three fire hoses are connected to a fire hydrant. Each hose has a radius of 0.013 m. Water enters the hydrant through an underground pipe of radius 0.094 m. In this pipe the water has a speed of 3.2 m/s.
A force vector has a magnitude of 584 newtons and points at an angle 45o of below the positive x axis. What are (a) x scalar component and (b) y scalar component of the vector.
What is the average magnitude of the Poynting vector 8.50 mi from a radio transmitter broadcasting is otropically (equally in all directions) with an average power of 260 kW?
Explain how fast must the candy bar travel to have the same 106 joules in the form of kinetic energy?
A motorcycle and rider have a total mass equal to 305 kg. What is the net force on the motorcycle
An infinitely long, charged, thin-walled cylinder has a radius, R, of 3.0 cm. The charge per unit length is 5.40 10-9 C/m on the shell. What is the magnitude of the electric Field at radial distance r= (R/2.1) cm from central axis?
The construction of a flat rectangular roof (4.7m x5.3m) allows it to withstand a maximum net outward force of20007N. At what wind speed will this roof blow outward
An 75.0 spacewalking astronaut pushes off a 640 satellite, exerting a 80.0 force for the 0.440 it takes him to straighten his arms. How far apart are the astronaut and the satellite after 1.5 min.
On a banked race track, the smallest circular path on which cars can move has a radius of 112 m, find the largest speed at which cars can move on this track without relying on friction
A high speed proton collides with a proton at rest, two proton-antiproton pairs were created. That is some of the accelerated protons kinetic energy was enough to be converted into the mass of the new particles. If the proton-antiproton pairs move al..
q1. a dentists drill starts from rest. after 3.30 s of constant angular acceleration it turns at a rate of 2.6 104
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