Tutors Answer Your Questions about Exponential-and-logarithmic-functions (FREE)
Question 1033051: Real world applications of exponential & logarithmic functions in the field of space exploration...
Please help, I don't know how to answer this question...I tried searching up some, but nothing came up related to the topic...
Click here to see answer by solver91311(24713)   |
Question 1033407: An astronaut r thousand miles from the center of the earth weighs  lbs, and the surface of the earth 4000 is miles from the center.
(a) If the astronaut is h miles above the surface of the earth, express r as a function of h.
r=
(b) Express the astronaut's weight w in pounds as a function of h.
w=
Click here to see answer by ikleyn(52800)  |
Question 1033473: Please help, I am very stuck, and it's a 3 part question:
Poiseuille's Law gives the rate of flow, R, of a gas through a cylindrical pipe in terms of the radius of the pipe, r,, for a fixed drop in pressure between the two ends of the pipe.
(a) Find a formula for Poiseuille's Law, given that the rate of flow is proportional to the fourth power of the radius.
Use k as the constant of proportionality.
R=
(b) If R= 550cm3/sec in a pipe of radius cm for a certain gas, find a formula for the rate of flow of that gas through a pipe of radius r cm.
R=
(c) What is the rate of flow of the gas in part (b) through a pipe with a 7 cm radius? Round your answer to two decimal places.
R= ___ cm3/sec
Click here to see answer by rothauserc(4718)  |
Question 1034832: The student enrollment of East End High School was 1,250 students in 1990 and increased at a rate of 10% per year until 2004. From 2004 until 2010, the enrollment increased by 6% each year.
Approximately how many students were enrolled at East End High School in 2010?
A. about 8,409
B. about 3,524
C. about 5,282
D. about 6,732
Click here to see answer by fractalier(6550)  |
Question 1034821: Nicole invested a certain amount of money for one year and earned $78 in interest. Jon invested $260 more at an interest rate that was 1% less than Nicole, but earned the same amount of interest. Find Nicole's principal and interest rate.
please explain.
Click here to see answer by Theo(13342)  |
Question 1035413: Between the start of 2005 and the end of 2009, the number of Facebook users can be modelled by the exponential equation u=0.43x(3.17)^t where u is the number of users in millions and t is the number of years since the start of 2004 (1<=t,6). So after 1 year (t=1) there are 1.4 million users (to 1 dp)
Find the number of years in which the exponential model predicts that the number of users would first reach 200 million.
I believe I have worked correctly that year 2 = 4.3 and year 3 = 13.7 but I don't know a 'quick' way to reach 200 million
Thank You
Click here to see answer by josmiceli(19441)  |
Question 1035675: Please help me with this problem. I have tried it over and over and the answer I keep coming up with is 18000.
$3000 is deposited in an account that pays 5% annual interest for 10 years. How much more would be in the account if the interest were compound continuously rather than quarterly?
Click here to see answer by Alan3354(69443)  |
Question 1035884: Please help never understood how to do these problems. Thanks in advance
If you put 2000 an interest bearing account is compounded quarterly(4 times a year)at 6%, how long will it take for your money to triple?
Click here to see answer by stanbon(75887) |
|
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910
|
