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Stainless-steel poles were arranged by an artist for the purpose of producing an enhanced display of lightning in a field of nearly one square mile. The magnetic field in New Mexico, where the rods are located, dips 64.0° below the horizontal and has a horizontal component of magnitude 2.5 x 10-5 T. Calculate the magnetic force on one of these poles, 6.09 m long, when it transmits an upward current of 2.16 x 104 A during a lightning discharge.
The yellow light from a helium discharge tube has a wavelength of 587.50. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.050.
oppositely charged parallel plates are separated by 5.31 mm. a potential difference of 600 v exists between the
A horizontal wire of length 0.11 m, carrying a current of 3.0 A, is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
A concave shaving mirror has a radius of curvature of 40.1 cm. It is positioned so that the (upright) image of a man's face is 2.7 times the size of his face. How far is the mirror from the man's face?
You wish to launch a satellite that will remain above the same spot on earth's surface. calculate the radius of the circular orbit this satellite must have
The lower boundary of the plate is defined by: y = 0.650 x2. The plate has a mass of 3.70 kg. Find the moment of inertia of the plate about the y-axis
A batter hits a pitched ball when the center of the ball is 1.24 m above the ground.The ball leaves the bat at an angle of 45° with the ground. find the distance between the fence top and the ball center
State the direction as an angle with respect to the +x axis.
Two small objects are hung, from a point, on strings 50 cm long. they each have mass .06 grams and are given equal charges if the strings each make an angle of 37 degrees with a vertical, what is the magnitude of the electric force between the ob..
a in friction problems the text uses r in place of the frictional force and normal force. derive r. and why is micro
Two 100 N forces pull on a 50kg mass. One of the forces pulls to the right and the other pulls 90 degrees from the first force. What is the net acceleration of the mass
A home run is hit such a way that the baseball just clears a wall 23 m high located 113 m from home plate. How much time does it take for the ball to reach the wall
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