Probability of getting exactly four correct answers
A multiple-choice test has 30 questions and each one has five possible answers, of which one is correct. If all answers were guesses, find the probability of getting exactly four correct answers
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A sample of primary standard grade K2Cr2O7 (MM = 294.20) weighing 0.2153g is dissolved, the solution acidified and excess KI added. The liberated I2 requires 44.86ml of the Na2S2O3 for titration.
In a study of the correlation between the amount of rainfall and the quantity of air pollution removed, the following data were collected:
The passengers in a roller coaster car feel 60% heavier than their true weight as the car goes through a dip with a 24 m radius of curvature. What is the car's speed at the bottom of the dip?
Calculate the state of stress at point B and draw it on an area element. Calculate the shear stress on an area element at B that is aligned at 45 degrees CCW with respect to the x-axis.
Prepare a written plan for making up 100.0mL of 0.100M KIsolution.(note the list of reagents and equipment provided on the preceding) Include in your plan the exact amount of KI that you will need the actual steps that you will take to prepare the
You have been asked to design a "ballistic spring system" to measure the speed of bullets. A spring whose spring constant is k is suspended from the ceiling. A block of mass M hangs from the spring.
If the face of the sign is subjected to a uniform pressure of a = 164 lb/ft2, determine the state of stress at points C and D. The sign has a width of 11.3 ft.
A projectile with mass of 533 kg is launched straight up from the Earth's surface with an initial speed vi. What magnitude of vi enables the projectile to just reach a maximum height of 4.6RE, measured from the center of the Earth? Ignore air fric
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