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Chapter 1: 4 (page 27)
The density of gold is 19.3 g/cm3 . What is this value in kilograms per cubic meter?
The density of gold in kg/m3 is 19300 kg/m3.
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At what distance above the surface of the earth is the acceleration due to the earth’s gravity 0.980 m/s2 if the acceleration due to gravity at the surface has magnitude 9.8 m/s2?
How many gallons of gasoline are used in the United States in one day? Assume that there are two cars for every three people, that each car is driven an average of 10,000 miles per year, and that the average car gets 20 miles per gallon.
A car is stopped at a traffic light. It then travels along a straight road such that its distance from the light is given by, whereand. (a) Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s. (b) Calculate the instantaneous velocity of the car at t = 0, t = 5.0 s, and t = 10.0 s. (c) How long after starting from rest is the car again at rest?
An point mass and a point mass are held apart. A particle of mass mis released from a point between the two masses from the group along the line connecting the two fixed masses. Find the magnitude and direction of the acceleration of the particle.
A useful and easy-to-remember approximate value for the number of seconds in a year is𝛑×107. Determine the percent error in this approximate value. (There are 365.24 days in one year.)
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