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A nasty teenager is dropping tomatoes from a bridge onto cars onthe road show. The height of the bridge (the point from whichthe tomatoes are dropped) is 10 meters above the ground. Theteen first sees cars when they come around a corner which is 50meters away. All cars drive at exactly the speed limit of 40kilometers per hour.
a) How long after a car comes around the curve does sheneed to wait before dropping a tomato to hit the hood of the car ata height of 1.0 meters above the ground?
b) After some time, the teen gets bored with justdropping the tomatoes. As a challenge, she decides to throwthe tomatoes straight up with some initial velocity, V(nought),rather that just dropping them. Asssume she throws thetomatoes 1.5 seconds after she sees the cars. What value ofV(nought) is needed for the tomatoes to hit the cars at the sameheight above the road?
c) Eventually, the teen gets bored with this new game and shedecides to throw the tomatoes straight down at an initialvelocity of 15 m/s. Now, how long does she need to wait afterseeing the cars to hit them at the same height?
The pressure in the steam condenser of a nuclear power plant is 1 psia. Calculate the absolute pressure head, the gage pressure, the gage pressure head, the vacuum pressure, and the vacuum pressure head under standard conditions.
A gate (shaped like .25 of a cylinder with radius R=3m) is used to control the flow of water through a canal.The height of the water in the tank is 30m. How much force must be applied to keep the gate from opening? The gate is 30m wide.
A concentrated moment is applied to the free end. Determine the maximum bending stress on the outside surface of the cylinder and the maximum bending stress on the inside surface of the cylinder.
If a temperature inversion forms over the city at a height of 0.70 km, how long will it take the carbon monoxide concentration to reach 50 ppm if the wind velocity is zero If the wind velocity is 1 m/s,
16.5 the california ambient air quality standard for visibility requires that the average sigma e be less than 0.23
A 0.4m^3 moist soil sample has the following: Moist mass = 711.2 kg, Dry mass 623.9 kg, Specific gravity of soil solids = 2.68 Estimate: a). Moisture content. b). Moist density.
Chemical ‘x' is regulated by EPA and the maximum allowable concentration in water is 10g/L. 1000 kg of chemical ‘x' is released in a lake (volume 1,000 m3) where it undergoes degradation as a first order reaction process
State 5 reasons why adding things to a project charter late in the project execution could be a detriment to the project's objectives
Compare to units, A and B. A has a new cost of $42,000, at life expectancy of 14 years, a salvage value of $4,000, and an annual operating cost of $3,000. B has a new cost of $21,000, a life expectancy of 7 years
The flow out of a reservoir is 2 L/s. The reservoir surface is 5 m x 5 m. How fast is the reservoir surface dropping?
Emissions of heat-trapping carbon dioxide (CO2) reached an all-time high of 31.6 gigatons in 2011, a 3.2% increase over 2010. The International Energy Agency said this further reduces the chance that the world can avoid a dangerous rise
What are the velocities of both just before impact and just after impact. There is a distance of 5m between the vehicles prior to the winch being turned on.
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