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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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You hold a hose at waist height and spray water horizontally with it. The hose nozzle has a diameter of 1.80 cm, and the water splashes on the ground a distance of 0.950 cm horizontally from the nozzle. If you constrict the nozzle to a diameter of 0.750 cm, how far from the nozzle, horizontally, will the water travel before it hits the ground? (Ignore air resistance.)
Rhea, one of Saturn鈥檚 moons, has a radius of 764 km and an acceleration due to gravity of 0.265 m/s2at its surface. Calculate its mass and average density.
A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at . A served tennis ball is typically in contact with the racquet forand starts from rest. Assume constant acceleration. (a) What was the ball鈥檚 acceleration during this serve? (b) How far did the ball travel during the serve?
A useful and easy-to-remember approximate value for the number of seconds in a year is饾洃脳107. Determine the percent error in this approximate value. (There are 365.24 days in one year.)
You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65 mi/h), and the trip takes 1 h and 50 min. On a Friday afternoon, however, heavy traffic slows you down and you drive the same distance at an average speed of only 70 km/h (43 mi/h). How much longer does the trip take?
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