03/27/16

8 moles of gas is at 22 degrees C and has a volume of 2.0 m^3. If it goes through an isobaric expansion to twice its volume.
What is the change in internal energy, how much work is done by the gas, and how much heat flowed into or out of the gas.
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03/17/16

What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?
1. A roller coaster has a mass of 500 kg and a radius of 9 m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track?   a) 8.7 m/s b) 9.5... more
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03/06/16

Cos -1 (- sqrt 2/2)
same as the question above
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02/02/16

how to integrate e^(-5x/7) from -7 to infinity?is it finite or infinite?if so than why?
i see that this graph goes to infinity at -2 and horizontally it starts from 2.so its indefinite i guess but whats the reason for that.
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01/29/16

Ms.Kitts works at a music store. Last week she sold 6 more than 3 times the number of CDs that she sold this week. Ms.Kitts sold a total of 110 CDs over the 2 w
It's deals with systems of equatu and variable such as x and y
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01/24/16

Find work function with stopping potential
Ultraviolet laser at 248nm is incident on a surface and results in the photoemission from the surface.(a)What is the work function of the surface? Assume the stoping potential is 2V.(b)What is the... more
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01/24/16

Differentiation question- how do I find the c
a particle travels along a straight line with its acceleration at the time t secs equal to (3t+2)m/s^2. The particle has an initial positive velocity and travels 30 m in the fourth second. Find the... more
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01/22/16

How would i write v(s)=?x^2-71xr-4rs-svx in slope-intercept form?
What is the slope and y-intercept? v(s)=∏x^2-71xr-4rs-s√x  
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01/22/16

Physical science
A 42 N horizontal force pushes on a 3.9 kg mass resting on a horizontal surface. The surface exerts a friction force of 12N against the motion. The acceleration of the 3.9 kg mass is ___ m/s^2.
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01/22/16

Physical Science
If the engines of a jet produce a force of 130,000 N, the acceleration of a 33,000 kg aircraft during takeoff is ___m/s^2.            
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01/22/16

Radius=2. What is r=2csc (pi/4). How do you do it with csc to get either sine or cosine. Confused.
someone please help me understand this. Teacher didn't explain.  
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01/22/16

An element has an atomic number of 71. What is it's mass?
physical science.
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11

01/22/16

prove that the recurring decimal 0.39 = 13/33 by the way the 0.39 is supposed to have a dot on 3 and a dot on 9
prove that the recurring decimal 0.39 = 13/33 by the way the 0.39 is supposed to have a dot on 3 and a dot on 9
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01/11/16

Function for a cubic curve
Hi all,   I wish to draw a cubic curve that has a Y intersact at 37, the downward slope and reach minimum point of 27.1, then upward slope and reach maximum point at 40.8, then finally downward... more
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01/08/16

three balls with masses of 4kg, 5kg, and 7kg form a right triangle what is the magnitude of the resultant gravitational force on the 7kg
three balls with masses of 4kg, 5kg, and 7kg form a right triangle
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01/08/16

The location of a particle at time t is s(t) = -16t2 + 6t + 20. What is the particle’s velocity at t = 2?
1. What is the tangent line to f(x) = e2x sin x at (π,0)?2. What is the tangent line to f(x) = x2 + 3x at (-2,-2)?3. What is Lim (x) / (sin x)?                     x→04. The location of a particle... more
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01/06/16

Parabolic function word problem
A truck with a height of 190m enters a tunnel with a parabolic ceiling the width of the tunnel is 20m and the maximum height of the tunnel is 10m. At what minimal distance from the edge at ground... more
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01/06/16

What is the geonomic sequence for 1000,200 and 1/4 trying to find the eighth term
Write an equation for the nth term of the geometric sequence  1000, 200, 1/4... Find the eighth term of this sequence.
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01/06/16

If a 1 ounce letter costs 44 cents to mail and a 4 ounce letter costs 139 cents. Find the difference in cost for a 1.75 ounce letter and a 4.75 ounce letter.
A 5 ounce letter costs 156 cents to mail. 
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01/03/16

HELP PLEASE!!!
F(x)= (1-e2x)/(1-ex). What value must be assigned to f(x) at x=0 to make f(x) continuous at x=0?
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01/03/16

Math Problem
Determine the value(s) of b so that x+b is a factor of p(x)= x^3+(b-2)x^2+x+(12-b).
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01/02/16

What math problem equals 2022399744
Is there a math problem that can equal this answer?
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01/01/16

In triangle ABC, if a=12, b=10 and the measure of angle C=45 degrees, determine the number of square units in the area of the triangle
This question Comes from chapter 2 of trigonometry. It deals with the law of Cosines. There is SSS method and SAS method.
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01/01/16

Probability of a specific sum rolling a pair of dice.
Rolling a pair of six-sided dice, what is the probability that you will get a sum of 4?   I thought the answer was 4/36 = 1/9 because each die is a mutually exclusive event 1-3, 3-1, 2-2, 2-2 but... more
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01/01/16

Math stuff
Please help me solve this this equation :                                                          a+bx=cx                                            a,b,c are constant number ,we need to solve... more
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