10/22/15

Calculate the change in internal energy of the following system: A 100.0-g bar of gold is heated from 25°C to 50°C during which it absorbs 322 J of heat. Assume
Calculate the change in internal energy of the following system: A 100.0-g bar of gold is heated from 25°C to 50°C during which it absorbs 322 J of heat. Assume the volume of the gold bar remains... more
Follows • 2
Expert Answers •1

09/29/15

Find f'(x) and f"(x): f(x)=x/x^2-1
Please help me 
Follows • 1
Expert Answers •1

08/31/15

find the derivative of each of the following
1) f(x)=6x-11/8x+1   2) f(x)=(5x-2)(2x+3)/x-4   3) f(x))=√¯8-5x    
Follows • 1
Expert Answers •1

08/27/15

Simplify (x+cos x)(cos x)-(1+sin x)(1-sin x)/(x+cos x)^2
Please help me
Follows • 1
Expert Answers •1

08/25/15

A 10 foot ladder is leaning against a house and makes an angle of 67 degree's with level ground. How far is the top of the ladder above the ground.
(round to 10th of a foot)
Follows • 1
Expert Answers •1

08/25/15

Simplify (x+cos x)(cos x)-(1+sin x)(1-sin x)/(x+cos x)^2
I need help please
Follows • 2
Expert Answers •1

08/25/15

Calculus Question
Which is the moment of inertia of the following system about the y-axis of the system   m1 = 6 at (2, 1)   m2 = 9 (-3, 6)   m3 = 11 (2, 9)
Follows • 1
Expert Answers •1

07/13/15

2xy'' + (1-2x^2)y' - 4xy = 0
Solve by series of expansion: Put in closed form: 2xy'' + (1-2x^2)y' - 4xy = 0
Follows • 2
Expert Answers •1

07/06/15

Thermodynamic Process
A 3.1-mole sample of an ideal gas is gently heated at constant temperature 290 K. The gas expands to 1.5 times its initial volume as its pressure decreases. What is the change in the internal... more
Follows • 1
Expert Answers •1

07/05/15

Physics: Entropy Change
If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?
Follows • 1
Expert Answers •1

07/05/15

Physics: Kinetic Theory
Kinetic theory a. What is the average kinetic energy of a monatomic gas at a temperature of 354 K? b. If this is Ne gas (neon has 20 nucleons) what is the root-mean-squared speed? c. What... more
Follows • 1
Expert Answers •1

05/08/15

Statistics Help! Urgent!
Suppose that 16% of the population of the U.S. is left-handed. If a random sample of 130 people from the U.S. is chosen, approximate the probability that at least 20 are left-handed. Use the normal... more
Follows • 1
Expert Answers •1

04/27/15

You fertilizer using one pound of N per 1000 square ft, 3x a year. Your bed = 5000 square ft. fertilizer = 25lb bags, costing $9, what is fertilizer cost?
garden math 
Follows • 1
Expert Answers •1

04/26/15

poisson distribution
assume the number of customers arriving at canondale dealerships follows a poisson distribution and averages 16.8 every 15 minutes.  what is the probability that 25 customers will arrive in the... more
Follows • 1
Expert Answers •1

04/20/15

Find a value of c satisfying Rolle’s Theorem for f(x) = x^3 -2x^2 -2x +4 on [0,2]. round your result to 3 decimal places.
It is continuous on [0,2] and differentiable on (0,2) f'(x)=3x^2-4x-2 The thing that I am stuck on is that f(a) does not equal f(b) f(0)=4 f(2)=0   I went ahead and plugged in the zero... more
Follows • 2
Expert Answers •1

04/20/15

Find the increase in the water's entropy.
Suppose that by stirring 495 g of water you are able to increase its temperature from 19.0° C to 21.0° C. Find the increase in the water's entropy. answer in J/K
Follows • 1
Expert Answers •1

04/19/15

See Description
  ∫ ex³•x2dx=
Follows • 1
Expert Answers •1

04/19/15

solve f'(x)=4x-3 when the curve passes (2,3)
solve f'(x)=4x-3 when the curve passes (2,3)
Follows • 1
Expert Answers •1

04/15/15

A rectangle has area 2yd squared and perimeter 6 yd, find dimensions
need answers in pointsand dimensions as well as using the quadratic formula to solve this system 
Follows • 1
Expert Answers •1

04/15/15

Need help finding the efficiency of a heat engine.
If a heat engine takes in 957 watts of heat from a source at a temperature 1,000 kelvin and dumps off 126 watts of heat to a heat sink at 300 kelvins. What is the efficiency of the heat engine?
Follows • 1
Expert Answers •1

04/13/15

A volume of nitrogen gas has a density of 1.15 kg/m3 and a pressure of 1.01 atm.
A volume of nitrogen gas has a density of 1.15 kg/m3 and a pressure of 1.01 atm. Find the temperature of the gas and the rms speed of its molecules
Follows • 1
Expert Answers •1

04/06/15

Calculate the pressure on a man's feet if his weight is
(a) Calculate the pressure on a man's feet if his weight is 1107 N and the soles of his feet have a total surface area of 355 cm2.  (b) Find the pressure on his feet when his body is 65% submerged... more
Follows • 1
Expert Answers •1

04/02/15

Find point of f(x)
Find point on f(x)=x^2 that is closest to point (4,0).
Follows • 1
Expert Answers •1

03/29/15

Find the absolute extrema on [-2,2]
f(x)= 10–12x+6x2–x3      
Follows • 1
Expert Answers •1

03/24/15

wavelength of light
When Michelson interferometer was used to measure the wavelength of monochromatic light, it was found that 400 fringes passed the observing microscope when the movable mirror was displaced 0.088... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.