Problem 1E: With time, t, in minutes, the temperature, H, in degrees Celsius, of a bottle of water put in the... Problem 2E: The world population11 P, in billions, is approximately P = 7.17e0.01064t , where t is in years... Problem 3E: If x2 + y2 = 25 and dxdt = 6, find dydt when y is positive and (a)x=0(b)x=3(c)x=4 Problem 4E: If xy = 100 and dxdt = 5, find dydt when (a)x=10(b)x=25(c)x=50 Problem 5E: With length, l, in meters, the period T, in seconds, of a pendulum is given by T=2l9.8. (a) How fast... Problem 6E: The Dubois formula relates a persons surface area, s, in meters2, to weight, w, in kg, and height, ,... Problem 7E: A plane is climbing at 500 feet per minute, and the air temperature outside the plane is falling at... Problem 8E: If is the angle between a line through the origin and the positive x-axis, the area, in cm2, of... Problem 9E: Atmospheric pressure decays exponentially as altitude increases. With pressure, P, in inches of... Problem 10E: The gravitational force, F, on a rocket at a distance, r, from the center of the earth is given by... Problem 11E Problem 12E: A voltage V across a resistance R generates a current I=VR in amps. A constant voltage of 9 volts is... Problem 13E: The potential, , of a charge distribution at a point on the positive x-axis is given, for x in... Problem 14E: The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by... Problem 15E: A pyramid has height and a square base with side x. The volume of a pyramid is V=13x2h. If the... Problem 16E: A thin uniform rod of length l cm and a small particle lie on a line separated by a distance of a... Problem 17E: In Problems 1720, use Figure 4.94 showing the altitude of a plane as a function of the time since... Problem 18E: In Problems 1720, use Figure 4.94 showing the altitude of a plane as a function of the time since... Problem 19E: In Problems 1720, use Figure 4.94 showing the altitude of a plane as a function of the time since... Problem 20E: In Problems 1720, use Figure 4.94 showing the altitude of a plane as a function of the time since... Problem 21E: A rectangle has one side of 10 cm. How fast is the area of the rectangle changing at the instant... Problem 22E: A rectangle has one side of 8 cm. How fast is the diagonal of the rectangle changing at the instant... Problem 23E: A right triangle has one leg of 7 cm. How fast is its area changing at the instant that the other... Problem 24E Problem 25E: Car A is driving east toward an intersection. Car B has already gone through the same intersection... Problem 26E: Car A is driving south, away from an intersection. Car B is approaching the intersection and is... Problem 27E: A dose, D, of a drug causes a temperature change, T , in a patient. For C a positive constant, T is... Problem 28E: When a company spends L thousand dollars on labor and K thousand dollars on equipment, it produces P... Problem 29E: An item costs 500 at time t = 0 and costs P in year t. When inflation is r% per year, the price is... Problem 30E: A 10 m ladder leans against a vertical wall and the bottom of the ladder slides away from the wall... Problem 31E: Gasoline is pouring into a vertical cylindrical tank of radius 3 feet. When the depth of the... Problem 32E: Water is being pumped into a vertical cylinder of radius 5 meters and height 20 meters at a rate of... Problem 33E Problem 34E: The radius of a spherical balloon is increasing by 2 cm/sec. At what rate is air being blown into... Problem 35E: If two electrical resistances, R1 and R2, are connected in parallel, their combined resistance, R,... Problem 36E: For positive constants A and B, the force, F, between two atoms in a molecule at a distance r apart... Problem 37E: For positive constants k and g, the velocity, , of a particle of mass m at time t is given by... Problem 38E: The circulation time of a mammal (that is, the average time it takes for all the blood in the body... Problem 39E: A certain quantity of gas occupies a volume of 20 cm3 at a pressure of 1 atmosphere. The gas expands... Problem 40E: The metal frame of a rectangular box has a square base. The horizontal rods in the base are made out... Problem 41E: A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is... Problem 42E Problem 43E: A cone-shaped coffee filter of radius 6 cm and depth 10 cm contains water, which drips out through a... Problem 44E: Water is being poured into the cone-shaped container in Figure 4.95. When the depth of the water is... Problem 45E: Grit, which is spread on roads in winter, is stored in mounds which are the shape of a cone. As grit... Problem 46E: A gas station stands at the intersection of a north-south road and an east-west road. A police car... Problem 47E: The London Eye is a large Ferris wheel that has diameter 135 meters and revolves continuously.... Problem 48E: Point P moves around the unit circle.13 (See Figure 4.96.) The angle , in radians, changes with time... Problem 49E: On February 16, 2007, paraglider Eva Wisnierska14 was caught in a freak thunderstorm over Australia... Problem 50E: Coroners estimate time of death using the rule of thumb that a body cools about 2F during the first... Problem 51E: A train is traveling at 0.8 km/min along a long straight track, moving in the direction shown in... Problem 52E: A lighthouse is 2 km from the long, straight coastline shown in Figure 4.99. Find the rate of change... Problem 53E: When the growth of a spherical cell depends on the flow of nutrients through the surface, it is... Problem 54E: A circular region is irrigated by a 20 meter long pipe, fixed at one end and rotating horizontally,... Problem 55E: For the amusement of the guests, some hotels have elevators on the outside of the building. One such... Problem 56E: In a romantic relationship between Angela and Brian, who are unsuited for each other, a(t)... Problem 57E: In Problems 5758, explain what is wrong with the statement. If the radius, R, of a circle increases... Problem 58E: In Problems 5758, explain what is wrong with the statement. If two variables x and y are functions... Problem 59E: In Problems 5960, give an example of: Two functions f and g where y = f(x) and x = g(t) such that... Problem 60E: In Problems 5960, give an example of: Two functions g and f where x = g(t) and y = f(x) such that... Problem 61E: Are the statements in Problems 6162 true of false? Give an explanation for your answer. If the... Problem 62E: Are the statements in Problems 6162 true of false? Give an explanation for your answer. If the... Problem 63E: The light in the lighthouse in Figure 4.102 rotates at 2 revolutions per minute. To calculate the... format_list_bulleted