Thrust into a swimming pool
When a float displaces water of 100 kg and is thrust into a swimming pool at a 45 degree angle, through a rod which does not move up or down, just laterally at a 45 degree angle, evaluate how hard in kg should one push to insert the float?
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Suppose the scores on an examination are normally distributed with mean 76 and standard deviation 15. What is the probability that a randomly selected student will get score between 70 to 90?
The elevator weighing 9.800 x103 N is supported through a steel cable. Find out the tension (in SI unit) in the cable if the elevator is accelerated upward at 1.00 m/s2. (Let, g = 9.80 m/s2)
Determine polar equation for ellipse with the focus at the pole and given polar coordinates as endpoints of its major axis. (3, pi/2) and (0.75, -pi/2).
The average number of phone calls at a particular phone booth is 6 per hour. If someone arrives immediately ahead of you at that booth, nd the probability that you have to wait more than 10 minutes.
A city is determining a CI for a new park. They have $95000 to spend on the survey. An outside polling company charges $50 for each person, and the city will use all the money (n=1900).
A block of 3.0 kg slides all along a frictionless table-top at 8.0 m/s toward a second block (at rest) of mass 4.5 kg. The coil spring, that obeys Hooke's law and consists of a spring constant k = 760 N/m, is joined to the second block in such a m
Primarily the blocks are at rest on the frictionless surface and they are held altogether so that the spring between them is compressed through an amount D from its equilibrium length. The blocks are then free and the spring pushes them off in the
A circuit comprises of a 215 Ohm resistor and an inductor of 0.200 H. These two elements are joined in series across a generator which consists of a frequency of 110 Hz and a voltage of 225 V. (i) Determine the current in the circuit?
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