Determine exact value of cos
Assume that terminal side of angle a lies in quadrant II and terminal side of angle B lies in quadrant I. If tan a=-3/4 and cos B=3/8, determine exact value of cos (a-B).
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The rectangle is inscribed with its base on a x axis and its upper corners on curve y=16-x^4. Determine dimensions of such a rectangle which has greatest possible area?
After 15 minutes, temperature of coffee is 39 F. Utilize newtons law of cooling to compute coffee's temperature after 20 minutes.
A proton is liberated in a uniform electric field, and it experiences an electric force of 2.8 multiplied by 10-14 N toward the south. Determine the magnitude and direction of the electric field?
Determine amount of radioactive lead remaining after (a) three years, (b) eight years, (c) fifteen years, (d) compute the half life.
The total force on an object in the positive x direction. Consider the given statements:
The 30-ft tree casts the 16-foot shadow on horizontal ground. Girl standing at the tip of shadow is looking at the bird nesting at top of tree. At what angle is girl looking up?
The hydrogen atom comprises of a proton of mass 1.67 x 10^-27 kg and an orbiting electron of mass 9.11 x 10^-31 kg. In one of the orbits, the electron is 5.3 x 10^-11 m from the proton. Determine the mutual attractive gravitational force among the
The object with mass m is placed halfway between an object of mass M and an object of mass 3M which are separated by a distance d. Find out the magnitude of force on the object with mass m?
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