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A 400 m long wire carries a current of 5A towards the north. the earths magnetic field of 75mT points north but 61 degrees below the horizontal. Calculate the magnitude of the magnetic force on the wire.
Water is flowing through a V-shaped weir, which has a 30° vertex. What is the distance from the surface of the water to the vertex
A silver wire 86.4 cm long and 1.04 mm in diameter have a mass of 6.85 g. Discover the number of electrons in the wire. (Silver has an atomic number of 47; that is, there are 47 protons in the Silver atom. Silver's atomic mass is 107.8682.)
A 0.500-kg mass on a spring has velocity as a function of timegiven by vx(t) = (3.60cm/s) sin[(4.71s-1)t -?/2]. What is the force constant of the spring
the index of refraction for red light in water is 1.331 and that for blue light is 1.340. what are the underwater angles of refraction for the blue and red components of the light
an iron wire has a cross-sectional area of 1.01 x 10-5 m2. carry out steps a through e to compute the drift speed of
Why do plane mirrors and convex mirrors form only virtual images?
A soccer ball is kicked from the ground with an initial speed of 20.1 m/s at an upward angle of 45.4?. What must be his average speed if he is to meet the ball just before it hits the ground
A torpid consisting of 500 loops of wire carries a current of 3.25 Amp. Obtain the strength of the magnetic field at the outer radius of the torpid
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, ten years have elapsed on earth, and 6.4 years have elapsed on board the ship. How far away (in meters) is the planet, according to obs..
At what angle of incidence should one of them shine a flashlight on the mirror so that the reflected beam directly strikes the other person
A meteorologist in a TV station is using radar to determine the distance to a cloud. How far away is the cloud
A machine shop has 120 equally noisy machines that together produce an intensity level of 92 dB. If the intensity level must be reduced to 82 dB, how many machines must be turned off?
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