Find how long the ball remains in the air
A boy throws a ball upward from the top of a tower with a speed of 12m/s. On the way down it just misses the thrower and falls to the ground 50m below. Find how long the ball remains in the air.
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Compute the direct materials price and quantity and the direct labor rate and efficiency variances. Indicate whether each variance is favorable or unfavorable. Please show all work and computations.
A ball is dropped from the top of a building. After 2 seconds, its velocity is measured to be 19.6 m/s. Calculate the acceleration for the dropped ball.
An insulated wire of diameter 1.0mm and negligible resistance is wrapped tighly around a cylindrical core of radius 5.0cm and length 30cm to build a solenoid.
Twenty business majors and 18 economics majors go bowling. Each student bowls one game. The scorekeeper announces that the mean for the 18 economics majors is 144 and the mean score for entire group of 38 students is 150. Find the mean for the 20
A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s2. Through what angle has the wheel turned when its angular speed reaches 72.0 rad/s?
A player of a video gameis is confronted with a series of four opponents and an 80% probability of defeating each oppnent.Assume that the results from opponents are independent (and when the player is deafeted by an opponent the game ends). a) wha
Corporation purchased a truck on June 1 2012 at a cost of $170,000. The truck had a useful life of 8 years with an estimated salvage value of $10,000. They use the straight-line depreciation method and their fiscal year end is 12/31.
To maintain this constant linear speed, the angular speed of the driving spool (the take-up spool) has to change accordingly. The angular speed of the take-up spool when it is empty, with radius r1 = 0.80 cm?
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