Po
Most popular questions and responses by Po
Chemistry
Explain the difference in acidity of MgO dissolved in water and of P4O10 in water in terms of position of the element in the periodic table and bonding. I found MgO is basic and P4O10 is acidic
asked on November 16, 2016 
Chemistry
Explain the difference in acidity of MgO dissolved in water and of P4O10 in water in terms of position of the element in the periodic table and bonding. I found MgO is basic and P4O10 is acidic
asked on November 17, 2016 
Physics
A beam of partially polarized light can be considered to be a mixture of polarized and unpolarized light. Suppose a beam of partially polarized light is sent through a polarizing filter. The polarization direction of the filter can be changed by rotating
asked on November 18, 2016 
la
Selection 1: There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatenedspecies list under the federal Endangered Species Act. The bad
asked on May 17, 2018 
Calculus
A rectangular swimming pool is 8 m wide and 20 m long. Its bottom is a sloping plane, the depth increasing from 1 m at the shallow end to 3 m at the deep end. Water is draining out of the pool at a rate of 1 m3/min. How fast is the surface of the water
asked on November 15, 2016 
Physics
Light of wavelength 469 nm passes through a slit, creating a diffraction pattern on a screen. The angular separation between the first diffraction minima on either side of the central maximum is 6.0∘ . Determine the width of the slit. I used this
asked on November 30, 2016 
Physics
A student has a small batterypowered alarm buzzer. The student throws the buzzer toward a stationary wall (possibly due to frustration following a physics midterm examination). The buzzer emits sound with a frequency of 74 Hz, and the wall reflects the
asked on October 21, 2016 
Physics
Two glass microscope slides, of length 10 cm, are in contact at one end and separated by a sheet of paper at the other end, which creates a wedgeshaped film of air. The thickness of the paper is t = 59 μm, and the glass has index of refraction n = 1.5.
asked on November 25, 2016 
Calculus
Find the limit. Use l'Hospital's Rule if appropriate. If there is a more elementary method, consider using it. lim (tan(7x))^x x~>0
asked on November 21, 2016 
Algebra
Given below are equations for 2 planes in R3. 3x1 − 2x2 = 10 x1 + 2x2 + 4x3 = −2 Explain why these two planes must intersect in a line.
asked on January 26, 2017 
Physics
(a) Would the pattern change if you were to use a shorter wavelength of light? Clearly state what change(s) would occur (if any) and briefly explain why. (b) The apparatus is surrounded by air. Would the pattern change if it were immersed in water instead?
asked on November 26, 2016 
Chemistry
A 24 L welding tank contains of 285 bar of argon at 28 °C. Nitrogen is added to obtain an 80:20 argon:nitrogen mixture. a) What are the partial pressures of argon and nitrogen? b) What will be the total tank pressure?
asked on November 20, 2016 
Calculus
show that ((x − 1)/x) 1 Hint: try to apply the Mean Value Theorem to the functions f(x) = lnx and g(x) = xlnx. I'm having trouble applying the mean value theorem
asked on November 14, 2016 
Algebra
Given points A(1, 3, −2), P1(2, 0, −1) and P2(4, −2, −1) Find the point P on the line through P1 and P2 that is closest to A
asked on January 25, 2017 
Calculus
Can someone help find limit using l'hopital rule lim x → ∞ ((3x4)/(3x+2))^(3x+1), I'm trying to solve by adding ln function to both side.
asked on December 3, 2016 
Math
can someone help me solve for x for this equation (0.5)(((cos(180x))^(2))(cos(90x))^(2))=0.0500
asked on December 2, 2016 
Math
can someone help me solve for x for this equation (0.5)(((cos(180x))^(2))(cos(90x))^(2))=0.0500
asked on December 1, 2016 
Calculus
Piecewise function x if −2≤x≤0; x^2 if −2
asked on January 24, 2017 
Calculus
Find inverse equation of y= 3e^(x1)^5 Answer I got is (ln(x/3))^(1/5) +5 =y But I think it's wrong because the domain and range is really different from the original equation
asked on January 22, 2017 
Linear algebra
In R2 plot and describe the set of all points P whose position vector is of the form p = s(1, 1) + t(−1, 1), 0 ≤ s, t ≤ 1
asked on January 19, 2017 
Algebra
In R4 you are given the points P(2,2,2,2), Q(9,−5,1,3), R(6,8,−4,1) (a) Write out all possible arrows which can be formed using the points P,Q,R.
asked on January 11, 2017 
calculus
Could somebody help my find the critical points for y=(x3)(x+2)^(2/3). When I take the derivative of the function I get is x=2,3. But when I put the original function in wolfram alpha there is minimum at x=0
asked on November 11, 2016 
Physics
How would you derive the formula {Ff+Fgx=ma} to show that µs=tanè
asked on March 19, 2013 
physics
A skier is going down a hill with a coefficient of friction of 0.21 and an angle of 7.5 degrees. if the skier has an initial velocity of 30 m/s, how fast will she be going after 10 s
asked on March 17, 2013 
physics
A Fletcher's trolley is set up over a cliff. If m1 = 40.5 kg (on top of the cliff) and m2 = 18.5 kg (hanging over the edge), what coefficient of friction is needed for the system not to move?
asked on March 17, 2013

social studies
po
posted on April 23, 2019 
math
Fresh raspberries contain 80% water. Dried raspberries contain only 20% water. How many pounds of dried raspberries do you get from 36 lb of fresh berries?
posted on May 13, 2017 
Chemistry
55
posted on February 20, 2017 
Calculus
There is a typo 8x if 2≤x≤3
posted on January 24, 2017 
Chemistry
0.120
posted on January 18, 2017 
Science
I think its 1 km = 1,000 meters
posted on October 7, 2016 
math
iawdhoadhaoidhiawodwa
posted on June 21, 2016 
world history
I don't know. I don't even know why im on this website. Oh yeah, I NEEDED THE ANSWER!!!!!!
posted on March 17, 2016 
SciencePhysics
po po po po po po po po po po po
posted on May 1, 2015 
physics
5641
posted on March 23, 2015 
Chemistry
18
posted on January 11, 2013 
Algebra
#2 elimination 3x7y=6 +2x+7y=4 ________ 5x =10 x =2 if x is 2, you plug it in 2(2)+7y=4 7y=44 y=0 (2,0)
posted on December 1, 2008 
math
plug 400 into x 350(400)  70
posted on December 1, 2008 
Math
for the second one you take the log of both sides x+3log9=log95 then you do algebra x=(log95/log9) 3
posted on December 1, 2008