Write equation which gives amount of iodine remaining
Half-life of iodine-123 is about 13 hours. You start with 1424 grams of iodine-123.
(a) Write the equation which gives amount of iodine-123 remaining after t hours.
(b) Find out number of hours required for the sample to decay to 8 grams.
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The colony of bacteria grows exponentially. Colony starts with 3 bacteria, but 2 hours after beginning of experiment, it has grown to 780 bacteria. Write the formula for number of bacteria as the function of time.
A satellite is one Earth radius over the surface of Earth. Explain how does the acceleration due to gravity at that position compare to acceleration at the surface of Earth?
At a later time t = 2.00 s, the particle is positioned at x = 8.50 m and y = 5.00 m. Determine constant force acted on the object throughout this time interval?
A uniform disk turns at 1.8 about a frictionless spindle. A non-rotating rod, of the similar mass as the disk and length equivalent to the disk's diameter, is dropped onto the freely spinning disk. They then both turn around the spindle having the
Half-life of iodine-123 is about 13 hours. You start with 1424 grams of iodine-123. Write the equation which gives amount of iodine-123 remaining after t hours.
For five points, express the multinomial coefficient 10M{2,3,5} as a product of binomial coefficients. Hint: the first one is10C2. For five more points, give a general formula for calculating the multinomial coefficient nM{a,b,c,d}, where a+b+c+d=n.
The far point of a near-sighted person is 6.5 m from her eyes, and she wears contacts which facilitate her to see far-away objects clearly. A tree is 23.8 m away and 2.8 m high.
School wishes to build the wheel-chair ramp, with the incline of 15 degrees, from ground to door. How much horizontal distance is required for ramp?
Your friend consists of a near point of 121 cm, and she wears contact lenses that encompass a focal length of 37.0 cm. Explain how close can she hold a magazine and still read it clearly?
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