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It is rosted at 60Hz in a uniform file of .45 T. Calculate the magnitude of the emf induced in the loop as a function of time.
The scaffold weighs 190 N and is 3.2 m long. What is the tension in each rope when the 702-N worker stands 2.20 m from one end?
At what location(s) between the object and the screen should a lens of focal length 12.8 be placed in order to produce a crisp image on the screen?
A radio tower has a 64-foot shadow cast by the sun. If the angle from the tip of the shadow to the top of the tower is 78.5 degrees, what is the height of the radio tower?
To determine the diameter of the sun, an astronomer might sight with a transit first to one edge of the sun and then to the other, estimating that the included angle equals 32'.
An airplane travels at 180 km/h for 5 hr in a direction of S48°E from Glenview Naval Air Station. At the end of this time, how far south of the Glenview Naval Air Station is the plane (to the ne
The angle of depression to the bottom of the pole is 14°, and the angle of elevation to the top of the pole is 18°. Find her distanse to the pole.
Which has the greater grade resistance: a 2200-lb car on a 2 degree uphill grade or a 2000-1b car on a 2.2 degree uphill grade?
A little boy is flying a kite. The string of the kite makes an angle of 30 deg with the ground. If the height of the kite is h=21 m, find the length in meters of the string that the boy has use
At the same time she measures the angle of depression of the landing spot to be 17 deg. How far away, to the nearest meter, is the landing spot from a point on the gorund vertically below the bal
Safety rules indicate that a ladder placed against a building. Find the leaste angle, correct to 1 decimal place, between the ground and a ladder according to safety rules.
The angle between the horizontal and gondola cable is 17.62 deg. Find the vertical rise of the gondola lift, correct to the nearest meter.
One force of 60.5 lb acts at an angle of 82.4 degrees above the horizontal, and the other force of 37.2 lb acts at an angle of 50.5 degrees below the first force. What is the total upward force o
The arm of a car windshield wiper is 12.75 in long and its attached at the middle of a 15.00 in blade. (assume that the arm and blade are in line.) What area of the windshield is cleaned by the wi
A wrecking ball is dropped. Its velocity at the bottom of its swing is V=√2gh, Where g, is the acceleration due to gravity. What is its angular velocity at the bottom if g=9.80 m/s and h=4.
What is the angle of depression from the top of the tower to a cell phone user who is 5 horizontal miles away and 400 feet above sea level?
The angel of elevation to the peak s 2.5 degrees. After you drive 17 miles closer the angle of elevation is 9 degrees. Approximate the height of the mountain.
If the glasses sit 1.9 cm from the eye, what is that person's near point? (Assuming the glasses are designed to allow focus on an object at the normal near point of 25 cm.)
How many 40W, 60lm/W flourescent lamps would be needed to provide an illuminance of 250lm/m^2 on a factory floor of an area 25m x 30m?
How far from a 53.4 mm focal-length lens must an object be placed if its image is to be magnified 2.20 and be real?
A second lens is positioned 10.0 cm to the right of the first lens and is observed to form a virtual image at the position of the original object O1. What is the focal length of the second lens?
A second converging lens with focal length 5.00 cm is placed 10.0 cm to the right of the first converging lens. Find the position q1 of the image formed by the first converging lens.
A converging lens has a focal length of f = 26 cm. An object is placed 37 cm from the lens. Find the size of the image in cm if the object has a height of 6 cm. Express the answer with one decima
When moving a convex lens toward and away from your eye, it reaches a point where the entire lens appears to be a single color. Why? What is this point called?
When you place a saltshaker 30 cm from your magnifying glass, a real image forms 30 cm from the lens on the opposite side. You can see this image dimly on a sheet of paper. What is the focal leng