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- Period 2 Date x° 330arrow_forwardA simplified model of the Earth-Mars system assumes that the orbits of Earth and Mars are circular with radii of 2 and 3 respectively, and that Earth completes a complete orbit in one year while Mars takes two years. The position of Mars as seen from Earth is given by the parametric equations x= (3−4 cosπt) cosπt+2,y= (3−4 cosπt) sinπt. a. Graph the parametric equations for 0≤t≤2. b. Letting r= 3−4 cosπt, explain why the path of Mars as seen from Earth is a limaconarrow_forwardSuppose a planet is found with an orbital period of 63.00 years. (Round the final answer to three decimal places.) 1. Its distance can be estimated using Kepler's third law. True 2. If its orbit is circular, what is the orbit's radius? Express your answer in AU.arrow_forward
- A 1.4-m pendulum is initially at its leftmost position of -9 degrees .Determine the period for one back-and-forth swing. Use g= 9.8 m/sec2 .Write a model for the angular displacement of the pendulum after t seconds.arrow_forwardfind the amplitude, period and phase shift for y=4cos(7x-4pi)arrow_forwardGraph one period of the function y = 3 cos(π/2x-3π/2)+2arrow_forward
- 2. A Ferris wheel has a radius of 40 feet and is boarded in the 6 o'clock position from a platform that is 5 feet above the ground. The wheel completes a counterclockwise revolution every 2 minutes. At t=0 the person is at the 3 o'clock position.arrow_forwardCannot solvearrow_forwardA golf ball is hit with an initial velocity of 135 feet per second (about 92 miles per hour) at an angle of 60 degrees to the horizontal. There is a 5 foot-per-second headwind that reduced the horizontal velocity by that amount. The vertical component of velocity is unaffected. Find parametric equations for the position of the ball relative to the tee as a function of time after it is hit. I= 135 cos 60π 180 5 =(1 y=-16t² + 135 sin 60π 180 After how many seconds does the ball hit the ground? t seconds How far does the ball travel before hitting the ground? feetarrow_forward
- Example 23.27 The figure below shows a vertical radio mast. CD and BD are wires supporting the mast, where B and Care on the same horizontal plane as the foot of the mast A, given that BC 12.2m CBD=ZBCD=68° and %3D ZACD = 40°. 12.2m 68° B Calculate, correct to two significant figures, the (i) length of the wire BD; (ii) height of the mast AD. (iii) |AB|arrow_forwardFind the b value to the equation y=3tan(bx) + 1 if the period is 2 pi?arrow_forwardFind the period and amplitude of this graph. -24 А. 4, 1.5 В. 4, 2 С. 1, 2.5 D. 2, 2arrow_forward
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