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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.
Two men on the same side of a tall building notice the angle of elevation to the top of the building to be 30 deg and 60 deg respectively.
He then turns 90° and walks 3.4 miles in the direction N 55° W. At that time, how far is he from his starting point, and what is his bearing from his starting point?
At the point of 210 m down street, the top of the bilding has an angle of elevation of 15 degree. How tall is the building?
Find the angle of the take-off (relative to the horizontal), and the magnitude of his take-off velocity. Without air resistance, how high and how long can he jump?
Suppose Bob bought an SUV that originally had tires with a iameter of 26 inches. If Bob's speedometer reads 85 mph, what is Bob's actual speed?
A naval cruiser on maneuvers travels 54.0 km at 18.7 degrees west of north, then turns and travels 64.5 km at 15.6 south of east. Find its displacement from its original position.
At the point where there are 36.0 ft of rope out, what force tends to bring the boat toward the wharf, and what force tends to raise the boat.
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
Why is the zeroth order maximum the same color as the source? For lines of a given order, are the red or violet lines on the screen closer to the zeroth order maximum?
A focal length f1 = 20 cm, lens 2 has f1 = -12 cm, and the lens separation is d = 7 cm. (a) What is the image distance i2 (including sign) for the image produced by lens 2?
A slide 23.9 mm high is to be projected so that its image fills a screen 1.84 m high. The slide-to-screen distance is 2.96 m. Determine the focal length of the projection lens.
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0s. What is the apparent weight of a 60.0-kg passenger when she is at the bottom of the wheel?