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Current of 4 amperes passing through conductor is driven by the electromotive force of 20 volts. Compute electromotive force if 2.1 amperes pass through conductor?
Frequency f in hertz (vibration per sec- ond) of the radio wave differs inversely with wavelength in meters. When frequency is f = 5.4018 × 105 hertz wavelength is = 555 meters. Determine
If two resistances connected in parallel possess the combined resistance of 3.0 ohms and same two resistances have the combined resistance of 16 ohms when connected in series, find resistances?
The bridge is built in shape of the semielliptical arch. It has the span of 96 feet. Height of arch 29 feet from center is to be 9 feet. Determine height of arch at its center.
The scientist starts with 20 grams of the radioactive substance. After seven days, sample has decayed to 17 grams. Compute half-life of the substance.
The half-life of Erbium-165 is 10.4 hours. After 24 hours the sample still contains 2 mg. Find initial mass of sample, and how much will remain after another three days?
The height of the baseball in feet t seconds after it has been hit is provided by f(t)=3+40t-16t^2. Determine height of ball 2 seconds after it was hit. Find initial height of ball when does ball h
The woman walks due west on deck of the ocean liner at 4 mi/h. Ocean liner is moving due north at the speed of 23 mi/h. Determine speed of woman relative to surface of water.
Suppose count grows exponentially, determine initial size of culture? Compute doubling period. Determine population after 90 minutes.
Determine the equation which models motion of mass if its frequency is 1/2 cycle per second, and its amplitude is 9 inches. Determine smallest time at which mass reaches 5 inches below equilibrium?
Points P and Q lie on curves y=x and y=x^2 + 1 respectively. State vertical distance between P and Q as the function of x. Determine the domain of the function?
Graph function to check that it is correct. The ferris wheel is 18 meters in diameter and boarded in six o'clock position from the platform which is 2 meters above ground.
Determine standard equation of the parabola which has vertices at (2,2) and (-2,2) and which has foci at (4,2) and (-4,2). Write equation of the parabola whose vertex is at origin (0,0) and whose f
Find probability that the adult selected at random from population is the renter? If the renter is chosen at random, find probability that he or she is in 21-44 age bracket?
The halogen desk lamp made by Luminar was found to be defective. Company has 3 factories where lamps are made. Find probability that defective lamp was made in Factory III?
If the driver in that area is stopped for the moving violation, find probability that he or she will have the seat-belt on?
Of those who were pre-retired, 22% replied no, and 78% replied yes. If the respondent in survey was chosen at random and had replied yes to question, find probability that he or she was retired?
Ball is drawn from Urn A and then put it to Urn B. Ball is then drawn from Urn B. Find probability that transferred ball was white provided that second ball drawn was white?
Suppose the percentage score, p(n) , is the function of number of hours, n, which you study in form p(n)=(an+b)/ (cn+d). If you wish the score of 80%, how long do you require to study?
Determine margin of error of large-sample 99% confidence interval for proportion of all Quebec adults who would permit doctor-assisted suicide?
Doubling period of the baterial population is 20 minutes. At time t=90 minutes, baterial population was 70000. Find initial population at time t=0? Determine size of te baterial population after fi
Create the coordinate system with positive y-axis projecting vertically upward from center of highway and x-axis crossing perpendicular to highway at ground level, positive axis to right.
Turntable starts from rest at t=0 and rotates with the constant angular acceleration of 0.730 rad/s^2. How much time it takes until coin starts to slip off turntable?
The mass on the string is spinning in the clockwise direction as you look at it. Determine direction of angular velocity? i.clokwise.
Determine the length of the arc cut off by the angle of 2 radians on the circle of radius 2 inches? Find angle determined by the arc of length 58? meters on the circle of radius 30 meters?