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A 97-mW vertically polarized laser beam passes through a polarizer whose polarizing angle is 15° from the horizontal. What is the power of the laser beam when it emerges from the polarizer?
A straight 2.00-m, 150-g wire carries a current in a region where the earth's magnetic field is horizontal with a magnitude of 0.55 gauss. a) What is the minimum value of the current in this wire so that its weight is completely supported by the m..
A generator is designed to produce a maximum emf of 150 V while rotating with an angular speed of 3600 rpm. how many turns of wire are needed
A child sits on the edge of a spinning merry-go-round that has a radius of 2.2 m. The child's speed is 4 m/s. What is the child's acceleration
A block of wood is compressed 2.4nm when inward forces of magnitude 128N are applied to it on two opposite sides. what is the effective spring constant of the block
A constant force of 45 N directed at angle ? to the horizontal pulls a crate of weight 100 N from one end of a room to another a distance of 4 m. Given that the vertical component of the pulling force is 12 N, calculate the work done by the force in ..
Some of the first "microscopes" were really single-lens magnifying glasses made by Leeuwenhoek. These devices had magnifications as high as 200.
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.85 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
A 35.0-m long string has a linear mass density of 0.00850 kg/m and is under a tension of 25.0 N. Find the frequency of the fourth harmonic
A weight of mass m1 is on africtionless ramp which makes angle theta with respect to thehorizontal. how long will it take to reach the horizontal
A roach that runs for its life because you try to hit it with your physics book runs off the horizontal tabletop with a speed of 0.578 m/s, Find the height of the table
An airplane has a mass of 28,000 kg and takes off under the influence of a constant net force of 44,000 N
A human hair is placed directly in front of the opening of a laser pointer. The light has a wavelength of 647.8 nm. Determine the approximate thickness of the hair
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