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1)
a) At a certain location, the Earth has a magnetic field of 2.2 × 10-5 T pointing in the northward direction at 36 ? below the horizontal (in a north-south plane). A 12 m-long straight wire carries a(n) 22 A current. If the current is directed horizontally toward the east, what is the magnitude of the magnetic force on the wire? Answer in units of N.
b) If the current is directed vertically upward, what is the magnitude of the magnetic force on the wire? Answer in units of N.
A laser produces a 5.10mW beam of light, consisting of photons with a wavelength of 637.8nm. How many photons are emitted by the laser each second
Antarctica is roughly semicircular in shape with a radius of2000km. The average thickness of the ice cover is 3000m. How many cubic centimeters of ice does Antarctica contain
The microwaves in a microwave oven are produced in a special tube called a magnetron. What is the maximum velocity the electrons may have
the wheels of an automobile are locked as it slides to a stop from an initial speed of 30.0 m/s. how far does it take the car to stop
The position of a 2.6 kg mass is given by x = (2t^3-4t^2), where t is in seconds. What is the net horizontal force on the mass
A mass-spring system with a natural frequency of 4.4 Hz is started in motion with an initial displacement from equilibrium of 5.7 cm, What is the amplitude of the resulting motion
A thin film of acetone (n = 1.25) coats a thick glass plate (n=1.50). White light is incident normal to the film. Calculate the thickness of the acetone film
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 49-m-diameter loop-the-loop
A charge of density p is distributed uniformly along an arc representing a half of a cirle of radius r. Determine the electric field intensity vector at an arbitrary point
A huge cannon is assembled on an airless planet. The planet has a radius 5.00 x 106m and a mass of 4.6 x1024 kg. The cannon fires a projectile up at 4000 m/s. what is the escape velocity of the planet
In a bicycle race, the leader is travelling with a constant velocity of 11.10 m/s and is 10.0 m ahead of the second-place cyclist. The second place cyclist has a velocity of 9.50 m/s and an acceleration of 1.20 m/s squared. How much time elapses b..
How many excess electrons must be added to an isolated spherical conductor of diameter 39.0cm to produce an electric field of 1105N/C just outside the surface
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