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At a McDonald’s branch, cars arrive at the Drive-Thru at a rate of 25 per hour and only one drive-thru till is open and the average time it takes for order and collection is 5 minutes. Assuming that the interarrival time and the service time are both exponentially distributed. What is the average number of customers at the till and the average time they have to wait before existing McDonald’s Drive-Thru? (500 words)
List and give examples for at least 5 Approaches methods to Gain Prospect Attention.
A soccer player kicks a ball at an angle of 37 degree from the horizontal with an initial speed
of 50 ft/sec. Assume that the ball moves in a vertical plane. a) Find the time t1 at which the
ball reaches the highest point of its trajectory. b) How high does the ball go? c) What is the
horizontal range of the ball and how long is it in the air? d) What is the velocity of the ball as
it strikes the ground?
A particle of mass m is attached to the end of a string and moves in a circle of radius of
radius r on a frictionless horizontal table. The string passes through a frictionless hole in the
table and, initially, the other end id fixed. a) if the string is pulled so that the radius of the
circular orbit decreases, how does the angular velocity change if it is ω0 when r = r0? b) what
work is done when the particle is pulled slowly in from a radius r0 to a radius r0/2?
A spaceship of mass m has velocity v in the positive x direction of an inertial reference
frame. A mass dm is fired out the rear of the ship with constant exhaust velocity (-v0) with
respect to the spaceship. a) using conservation of momentum, show that dv/v0 = dm/m, b)
By integration, find the dependence of v on m if v1 and m1 are the initial values. c) Can the
acceleration be constant if dm/dt, the burning rate is constant.
Q2. If a local newspaper reported that the Malaysian government will shore up the sliding ringgit by working to cut record budget and trade deficits.
a) According to the model in this chapter, would a reduction in the budget deficit reduce the trade deficit? Would it raise the value of ringgit? Explain.
does chlorine form a cation or anion
Find the negation of each: 1.
∃
x ( (x+3=2) ^ (x
-
2 =1))
2Na+Cl2→2NaCl
When 10.0 g of Cl2 is used, the reaction produced 12.5 grams NaCl. What is the % yield of the reaction?
Use the following molar masses: Cl2=70g/mol and NaCl=58g/mol.
Show that for every real number x > 0, there exists a real number y > 0 such that |2x + y| = 5