07/10/15

Physics: volume expansion, temperature (thermodynamics?)
Rivets can be cooled before they are put in place, thus when they reach equilibrium temperaturethey are more firmly fixed in place.   If the volume expansion of iron is 35.0 X 10-6 K-1 what... more
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07/08/15

Physics: Kinetic Theory
Kinetic theorya. 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 temperature... more
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07/06/15

Polynomials
Should i write a4-7a²b²+kb4 in f(a) or f(b)? because i am confused and it has 2 variables in this polynomial.
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07/06/15

Polynomials
Should i write a4-7a²b²+kb4 in f(a) or f(b)? because i am confused and it has 2 variables in this polynomial.
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07/04/15

Polynomials
IS A POLYNOMIAL IN THE VARIABLE X THE SAME AS A POLYNOMIAL IN X?
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07/04/15

Polynomials
Is a polynomial in x the same as a polynomial in the variable x. Answer this question in full sentence.
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07/02/15

Polynomials
Is a polynomial in x the same as a polynomial in the variable x?
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06/18/15

a car acquires a speed of 40km/hour in 30secs in just after the start what is the acceleration of the car
acceleration
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06/12/15

Physics Help
A straight wire of 120 cm carries directional current of 0.25A.If the space is affected by magnetic field of 0.5T that perpendicular to the current,thus the magnitude of Lorentz force of the wire... more
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06/11/15

Some questions....help
Magnetic flux produced by magnetic filed B that through perpendicularly a surface of width A is P.If the magnetic field is reduced into B/2,but the width surface enlarged to 2A,then flux produced... more
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05/19/15

Write the slope-intercept form of the equation of the line that passes through (4, 2) represented by -2x + y = 7
i so need help in algebra especially slopes.
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05/14/15

Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
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05/10/15

A solution has a hydronium-ion concentration of about 3.85 × 10-11 mole per liter. Determine the pH of the solution
A solution has a hydronium-ion concentration of about 3.85 × 10−11mole per liter. Determine the pH of the solution
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04/25/15

A 0.010 M solution of aspirin has a pH = 3.3. (4) a. Calculate the [H3O+] in this solution. b. Based on the information given, is aspirin a strong or a
A 0.010 M solution of aspirin has a pH = 3.3. (4) a. Calculate the [H3O+] in this solution. b. Based on the information given, is aspirin a strong or a weak acid? Explain.
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04/21/15

Using a Vertical Motion Model
A baseball player hits a foul ball straight up in the air from a height of four feet off the ground. The initial velocity as the ball comes off the bat is 130 feet per second. The motion of ball... more
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04/13/15

If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal p
If a sample of a certain solution is determined to have a [H3O^+] concentration of 4.6*10^-1 moles/liter, what is its pH? Round off your answer to one decimal place. 
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04/12/15

In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water
In chemistry, the pH of a solution is a measure of the acidity or alkalinity of the solution. Water has a pH of 7 and in general, acids gave a pH less than 7 and alkaline solutions have a pH... more
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04/09/15

A bear that weighs 4000 newtons grasps a vertical tree and slides down at a constant velocity. What is the friction force that acts on the bear
Bear weighs:4000 newtons tree: slides down at a constant velocity  
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04/09/15

Physics Problem
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 88.3 × 105 kg, of which 17.7 × 105 kg is fuel. The rocket engine is then fired for 450... more
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04/07/15

Please help me solve this word problem (NEED HELP ASAP!!!!)
The height of an object shot straight up with an initial velocity of v in feet per second is given by h + -16ft2 +vt + c, where c is the initial height of the object above the ground. The ringer on... more
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04/01/15

find the best linear approximation
f(x)=1/(√1+x)   please note that it is square root of 1+x
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03/11/15

Solve the equation 9 = square root of 27(4x + 6). Using complete sentences, explain the strategy used in solving this equation.
Solve the equation 9 = square root of 27(4x + 6). Using complete sentences, explain the strategy used in solving this equation.
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03/11/15

x squared plus 4x -y squared plus 4
factor polynomials
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03/10/15

Write the polynomial in standard form.Then named the polynomial based on its degrees and number of terms. 3z^4-5z-2z^2
3z^4-5z-2z^2
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03/04/15

Physics Question pt. 2
I'm really struggling with this problem. If anyone could help me out with these it would be greatly appreciated: 2.) An airplane is flying in a horizontal circle at a speed of 450 km/h (see the... more
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