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Find the Amplitude, period, and the phase shift of each function
(a) y= -2cos(2=x-π/2)
(b) y= 2cos(2πx-4)-1
A scout troop is practicing its orienteering skills with a map and compass. First they walk due east for 1.2 km. Next,they walk 35 degrees west of north for 3.5 km. How far and inwhat direction must they walk to go directly back to their startingp..
A Ping Pong ball is a hollow, air-filled sphere. One such Ping Pong ball has a radius of 2.25 cm and a mass of 3.5 g. When the ball is placed a few centimeters below the surface of body of fresh water and released, the ball will accelerate upwards
A uniform meter stick is in static rotational equilibrium when a mass of 220 g is suspended from the 5.0 cm mark, What is the mass of the meter stick
A laser beam of power 4.60 W and diameter 2.6 mm is directed upward on the circular face ( diameter of the face
A child sitting 1.06 m from the center of a merry-go-round moves with a speed of 1.35 m/s. Calculate the centripetal acceleration of the child
A tin can is filled with water to a depth of 38cm . A hole 20cm above the bottom of the can produces a stream of water that is directed at an angle of 30? above the horizontal. Find the maximum height of this stream of water
A bar of length 1.5 meters moves to the left at 4.6 m/s along a set of conducting rails. The rails and bar have a net resistance of 10 Ohms. Determine the induced electromotive force
A radioactive atom is moving with respect to the laboratory (which is the Earth frame) at the speed of 0.8c in the +x direction. determine the velocity of the electron measured by a laboratory observer
A bullet is shot straight up into the air. It takes 30.5 s for the bullet to go straight up and fall back straight down to its starting position. At what initial speed (in m/s) was the bullet shot into the air
In a piston-cylinder assembly, 20 KJ of boundary work is being done on the piston. determine the axial displacement of the piston
In addition to dark matter cosmologists have proposed dark energy. The reason for this was the discovery of: A) slowing down of the expansion of the universe B) cosmic background radiation C) acceleration of the expansion of the universe D) gravitati..
A 120 cm length of string has a mass of 2.50 g. It is stretched with a tension of 7.00 N between fixed supports. what is the lowest resonant frequency of this string
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