Question At a fashion retailer, there are 3 cashiers providing checkout service to customers simultaneously. On average, customers arrive at the checkout area every 6 minutes. The standard deviation of the inter-arrival time is 6 minutes. The average checkout time for each customer is 12 minutes, with its standard deviation equal to 13 minutes. What is the fraction of time during which a cashier is busy (i.e., what is the utilization of a cashier)? Note: 1. Provide your answer as a percentage, but do not include the % mark. 2. Round your answer to 2 decimal places. For example, if your answer is 58.123%, enter 58.12. Your Answer: Answer

4.17. Karen Perez nins an office supply store that also performs simple office services, such as copying. It is time to purchase a new high-speed copier and Karen has learned that machine uptime is a critical factor in selection. She has gathered the following data on reliability and maintainability for the three copiers she is considering. Given that all other factors are equal, which machine should Karen purchase? Copier Mean Time Between Failures (Hours) Mean Time to Repair (Hours) Able Copy 40 Business Mate 80 Copy Whiz 240

PEER TO PEER BUSINESS 1. Prior to launching their firms, how could BlackJet, Ridejoy, and neighborrow.com have better anticipated the issues that ultimately caused them to fail? 2. In regard to putting together an effective business model, what can other peer-to-peer business model start-ups learn from the failures of BlackJet, Ridejoy, and neighborrow.com? 3. Spend some time looking at lyft, one of the successful peer-to-peer business model companies mentioned in this feature. Why do you think lyft has been successful while BlackJet, Ridejoy, and neighborrow.com failed? 4. What role do you think the industry that a start-up is in plays in its success or failure as a peer-to-peer business? Are some industries more receptive to peer to peer business model start-ups than others? Explain your answers.

An airplane propeller is 2.68 m in length (from tip to tip) and has a mass of 117 kg. When the airplane's engine is first started, it applies a constant net torque of 1990 N·m to the propeller, which starts from rest. . What is the angular acceleration of the propeller? Model the propeller as a slender rod. Express your answer in radians per second squared. View Available Hint(s) a = 28.4 rad/s Submit Previous Answers Correct What is the propeller's angular speed after making 5.00 revolutions? Express your answer in radians per second. How much work is done by the engine during the first 5.00 revolutions? Express your answer with the appropriate units. What is the average power output of the engine during the first 5.00 revolutions? Express your answer with the appropriate units. What is the instantaneous power output of the motor at the instant that the propeller has turned through 5.00 revolutions? Express your answer with the appropriate units.

A projectile is launched with an initial speed of 43.0 m/s at an angle of 35.0° above the horizontal. The projectile lands on a hillside 3.90 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis is up along the page. (30 points) a) What is the projectile's velocity at the highest point of its trajectory? (You must find the magnitude and direction of the velocity). Magnitude: (10 points) Direction: (10 points)

An airplane propeller is 2.88 m in length (from tip to tip) and has a mass of 117 kg. When the airplane's engine is first started, it applies a constant net torque of 1850 N⋅m to the propeller, which starts from rest. What is the angular acceleration of the propeller? Model the propeller as a slender rod. What is the propeller's angular speed after making 5.00 revolutions? How much work is done by the engine during the first 5.00 revolutions? What is the average power output of the engine during the first 5.00 revolutions? What is the instantaneous power output of the motor at the instant that the propeller has turned through 5.00 revolutions?

See attached aaВW2DaaW1Given that w1 - 15 kN/m, w2 = 14.5 kN/m and a = 1.5 m,determine the internal normal force, shear force and bending|moment at points D and E of the two-member frame. Round allanswers to the nearest integer.Normal force at Din kN (round to the nearest integer):kNShear force at D in kN (round to the nearest integer):kNBending moment at Din kNm (round to the nearest integer):kNmNormal force at E in kN (round to the nearest integer):kNShear force at Ein kN (round to the nearest integer):|kNMagnitude of bending moment at E in kNm (round to the nearestinteger):kNm