cap1en serway marzo 17, 2021 A creature moves at a speed of 5.00 furlongs per fortnight (not a very common unit of speed). Given that 1 furlong =220 yards and 1 fortnight =14 days, determine the speed of the creature in meters per second. Explain what kind of creature you think it might be.
cap1en serway marzo 17, 2021 One year is nearly π x 10^7 s. Find the percentage error in this approximation, where "percentage error" is defined as...
cap1en serway marzo 17, 2021 A high fountain of water is located at the center of a circular pool as shown in Figure P 1.53 . Not wishing to get his feet wet, a student walks around the pool and measures its circumference to be 15.0 m . Next, the student stands at the edge of the pool and uses a protractor to gauge the angle of elevation of the top of the fountain to be 55.0° . How high is the fountain?
cap1en serway marzo 17, 2021 the diameter of our disk-shaped galaxy, the Milky Way, is about 1.0 x 10^5 light-years (ly). The distance to Andromeda, which is the spiral galaxy nearest to the Milky Way, is about 2.0 million ly...
cap1en serway marzo 17, 2021 For a period of time as an alligator grows, its mass is proportional to the cube of its length. When the alligator's length changes by 15.8 %, its mass increases by 17.3 kg. Find its mass at the end of this process.
cap1en serway marzo 17, 2021 The ratio of the number of sparrows visiting a bird feeder to the number of more interesting birds is 2.25. On a morning when altogether 91 birds visit the feeder, what is the number of sparrows?
cap1en serway marzo 17, 2021 In a college parking lot, the number of ordinary cars is larger than the number of sport utility vehicles by 94.7 %. The difference between the number of cars and the number of SUVs is 18 . Find the number of SUVs in the lot.
cap1en serway marzo 17, 2021 A young immigrant works overtime, earning money to buy portable MP3 players to send home as gifts for family members. For each extra shift he works, he has figured out that he can buy one player and two thirds of another one. ..
cap1en serway marzo 17, 2021 A child is surprised that she must pay $\$ 1.36$ for a toy marked $\$ 1.25$ because of sales tax. What is the effective tax rate on this purchase, expressed as a percentage?
cap1en serway marzo 16, 2021 The tropical year, the time interval from one vernal equinox to the next vernal equinox, is the basis for our calendar. It contains 365.242199 days. Find the number of seconds in a tropical year.
cap1en serway marzo 16, 2021 The radius of a uniform solid sphere is measured to be (6.50 ± 0.20) cm , and its mass is measured to be (1.85±0.02) kg . Determine the density of the sphere in kilograms per cubic meter and the uncertainty in the density.
cap1en serway marzo 16, 2021 How many significant figures are in the following numbers: (a) 78.9 ±0.2 (b) $3.788 \times 10^{9}$...
cap1en serway marzo 16, 2021 A rectangular plate has a length of (21.3 ± 0.2) cm and a width of (9.8 ± 0.1) cm . Calculate the area of the plate, including its uncertainty.
cap1en serway marzo 16, 2021 An automobile tire is rated to last for 50000 miles. To an order of magnitude, through how many revolutions will it turn? In your solution, state the quantities you measure or estimate and the values you take for them.
cap1en serway marzo 16, 2021 Let $\rho_{ Al }$ represent the density of aluminum and $\rho_{ Fe }$ that of iron. Find the radius of a solid aluminum sphere that balances a solid iron sphere of radius $r_{ Fe }$ on an equal-arm balance.
cap1en serway marzo 16, 2021 One cubic meter (1.00 m ^3) of aluminum has a mass of 2.70 x10^3 kg , and the same volume of iron has a mass of 7.86 x10^3 kg . Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 2.00 cm on an equal-arm balance.
cap1en serway marzo 16, 2021 The mean radius of the Earth is 6.37 x10^6 m and that of the Moon is 1.74 x10^8 cm . From these data calculate (a) the ratio of the Earth's surface area to that of the Moon and (b) the ratio of the Earth's volume to that of the Moon...
cap1en serway marzo 16, 2021 One gallon of paint (volume =3.78 x10^-3 m ^3 ) covers an area of 25.0 m ^2. What is the thickness of the fresh paint on the wall?
cap1en serway marzo 16, 2021 hydrogen atom has a diameter of 1.06 x10^-10 m as defined by the diameter of the spherical electron cloud around the nucleus. The hydrogen nucleus has a diameter of approximately 2.40x 10^-15 m . (a) For a scale model, represent the diameter of the hydrogen atom by the playing...
