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A ball is dropped from the top of an 80 m building. Does it reach the ground in 4.0 s? (Hint: See Figure 2.7.) With what speed does the ball in Exercise 15 hit the ground?
Exercise 15
A car travels on a straight, level road.
(a) Starting from rest, the car is going 44 ft/s (30 mi/h) at the end of 5.0 s. What is the car's average acceleration in ft/s2?
(b) In 4.0 more seconds, the car is going 88 ft/s (60 mi/h). What is the car's average acceleration for this time period?
(c) The car then slows to 66 ft/s (45 mi/h) in 3.0 s. What is the average acceleration for this time period?
(d) What is the overall average acceleration for the total time? (Note these convenient British unit conversions: 60 mi/h 88 ft/s, 45 mi/h 66 ft/s, and 30 mi/h 44 ft/s.)
MSW generation rate = 4.0 lb/(person-day); density of the compacted MSW in the landfill is 775 lb/yd3; the average depth of waste in the landfill is 50 ft; landfill life should equal 20 years. Finally, assume that 40% of the total land area must b..
In this experiment we reduced methylene blue with ascorbic acid using HCl as a catalyst. Given that the half reaction for the reduction of methylene blue is MB+(ox) +2H +2e -----> MBH2
How many joules of heat are lost by 3473 kg granite as it cools from 41.1°C to -13.1°C?
Determine the percent by mass of calcium carbonate in the sample
What is the maximum number of phases that can be in mutual equilibrium in a four component system?
What volume, in L, of hydrogen gas at standard temperature and pressure (STP) is produced from reacting 0.333 L of 0.807 M hydrochloric acid with aluminum metal? (1 mol of gas @ STP = 22.4 L).
For experiment 4 in chem. 208, Explain how do you find the term symbol. For example part 1b how did she determine the term symbol for the red line color
Which compound is most likely to dissociate and give O2(g) at 25?C?
An ice cube of mass 10.0g. Is at -20oC. How much energy is needed to make the ice into steam at 172oC?
Saturated Calomel Electrode || Titration Solution | Ag (s) Calomel Electrode: E=0.241V For Ag+ + e- ---> Ag(s), E0 = 0.79993 V. AgI is Ksp = 8.3 × 10-17. What it the volts at equivalence point when Ve=30.00mL
One of the nuclides in spent nuclear fuel is U-253, an alpha emitter with a half life of 703 million years. How long will it take for the amount U-235 to reach 14.0 percent of its initial amount? T=?
Explain when performing the recrystallization step, you boiled down the solvent until you began seeing crystals form and then let it cool on the bench as well as then further cooling it with ice.
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