Questions and answers by

charlie

Questions (180)

need help please. thanksevaluate and simplify. (8x/y) for x=10 and y=2
1. 3 answers
2. 543 views
Tell which real number corresponds to the situation:During a month, a person withdraws $350. what is the corresponding # for
1. 2 answers
2. 833 views
what is between the helium particles in a helium filled balloon?
1. 0 answers
2. 252 views
A mass of 0.4 kg, hanging from a spring with a spring constant of 80 N/m, is set into an up-and-down simple harmonic motion.
1. 4 answers
2. 2,331 views
A multiple loop configuration is rotating at 60 Hz in a magnetic field of 0.12 T. The coil has an area of 0.0052 m2. How many
1. 0 answers
2. 915 views
I read this in a write-up of an experiment using atomic clocks:To reveal these effects, required the use of highly accurate
1. 2 answers
2. 924 views
desperately seeking help. work must be shown. answer must be in simplest form. Thanks1 1 _ X _ 2 2
1. 2 answers
2. 421 views
I have to find the relationship between these sequences, and express a generality. Could you help please.1 + 3 + 5 + 3 + 1 = 3^2
1. 4 answers
2. 523 views
A compound containing 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end
1. 1 answer
2. 1,135 views
I'm reposting this, because Mathmate's answer hasn't directed me to the WHY? part of the question. Any prompts appreciated.The
1. 1 answer
2. 1,143 views
I have this question to work on, and I don't know where to start investigating the answer:The product of any two (whole) numbers
1. 2 answers
2. 505 views
If you’re asked to list for things can the way of your listing be vertical or horizon.
1. 2 answers
2. 852 views
Would someone check this please?A circular loop of wire of radius 0.10 m and of resistance 2.0 x 10^−3 ohms is in a region
1. 1 answer
2. 707 views
The last stage in the fusion of hydrogen to form helium in the Sun involves the formation of an alpha particle (4He) from two
1. 0 answers
2. 563 views
Would someone check this please?A circular loop of wire of radius 0.10 m and of resistance 2.0 x 10^−3 ohms is in a region
1. 0 answers
2. 660 views
The last stage in the fusion of hydrogen to form helium in the Sun involves the formation of an ƒ¿-particle (4He) from two 3He
1. 0 answers
2. 552 views
Would someone check this please?A circular loop of wire of radius 0.10 m and of resistance 2.0 �~ 10−3 ƒ¶ is in a region
1. 0 answers
2. 1,241 views
In an elastic collision:mass a is 1kg, and is moving at 100ms^1 in the +ve x direction when it hits mass b, 10kgs at rest.
1. 1 answer
2. 533 views
Would someone check my thinking please.A solid sphere (mass, r, and moment of inertia given) is rotating at a given angular
1. 2 answers
2. 585 views
Keplers third law I understand.T^2/a^3 of one planet = T^2/a^3 second planet. But I can't do the algebra to solve for the second
1. 2 answers
2. 737 views
If a sample of an ideal gas is heated at a constant volume, I believe its entropy will increase.Am I right? Thanks.
1. 2 answers
2. 425 views
I know that to solve:f=1 over 2 pi sqrt LC for C, I have to use C= 1 over L(2 pi f)^2 Can someone take me through the
1. 4 answers
2. 867 views
Would someone explain entropy in simple terms please. Thanks.
1. 2 answers
2. 492 views
I think that:psi= A sin kx; is a solution to Schrodinger's time independent eqn for a particle confined: a) within an infinite
1. 1 answer
2. 424 views
If energy is 1/2 mv^2; and m and v are always positive....How come the ground state energy of Hydrogen is a minus value? Charlie
1. 1 answer
2. 405 views
I've just read that the centripetal force on an electron is mv^2/r; and that this is also equal to the electrostatic force
1. 4 answers
2. 546 views
I think I can rearrange the Lorentz contraction equation, solving for v using:v=sqrt[1-(L/Lo)^2] x c^2 Would someone check my
1. 1 answer
2. 744 views
The answer was incorrect and that is why I am asking again Mr. Parsley
1. 1 answer
2. 453 views
In the number 268,743 how many times greater than the 3 is the 6?
1. 1 answer
2. 356 views
write the next four letters in this sequence A B Z Y C D
1. 2 answers
2. 449 views
Reposted under Physics...I've tried for hours to solve for v, but can't get the rearranging right. I'm using L= Lo sqrt 1-
1. 1 answer
2. 480 views
I've tried for hours to solve for v, but can't get the rearranging right.I'm using L= Lo sqrt 1- v^2/c^2 Can anyone suggest the
1. 2 answers
2. 466 views
In the number 268,743 how many times greater than the 3 is the 6
1. 2 answers
2. 380 views
I need to calculate the magnification, m of an objective lens, so I can then x it by the eyepiece value for M to get the total
1. 2 answers
2. 645 views
Ms Writeacher my math work book which is a fifth grader Harcourt Math Practice Workbook does not say what Tues so my mon think
1. 1 answer
2. 466 views
the response from Ms writeacher did not show the answer
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2. 347 views
kirk grew a crystal in science class. On monday it was 13/16 inch tall. it had grown 1/4 inch bet friday and monday. It had
1. 3 answers
2. 554 views
what is the value of 4 in 0.045
1. 2 answers
2. 387 views
Can the magnitude of a magnetic field be negative?If we consider an electron in a mag field, using r=mv/qB, the negative charge
1. 2 answers
2. 653 views
In a 9V circuit, all the resistors are 20 or 40 kilo Ohms.Convention says that calcs should therefore be quoted to 1 sig fig,
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2. 642 views
In a 9V circuit, all the resistors are 20 or 40 kilo Ohms.Convention says that calcs should therefore be quoted to 1 sig fig,
1. 0 answers
2. 433 views
(1) 2 particles of equal mass are fixed at X=0 and another +ve point on the x axis.No other grav influences are in the system.
1. 3 answers
2. 589 views
(1) 2 particles of equal mass are fixed at X=0 and another +ve point on the x axis.No other grav influences are in the system.
1. 0 answers
2. 478 views
A 9v circuit charges a capacitor to steady state. Then the switch is opened.All resistance units in kilo-ohms: 2 rsistors, 20
1. 3 answers
2. 511 views
If I have a 9V circuit, with:2 resistors in parallel; followed by: 2 single resistors in series; and I calculate the effective R
1. 3 answers
2. 631 views
I need to calculate the closest two parallel plates can get before they sparkI have the voltage, and will use E=V/dist
1. 2 answers
2. 482 views
I'm stumped:So bringing it back to the top. Hope that's ok! 2 charges, Q1 and Q2, equal magnitude, but different signs (not
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2. 537 views
I'm stumped:2 charges, Q1 and Q2, equal magnitude, but different signs (not assigned) lie on a line, x axis, a known distance
1. 2 answers
2. 1,319 views
would I be correct if I explained the 3 expressions in Bernoulli's equation as representing:P is the pressure 1/2*rho*v squared
1. 5 answers
2. 476 views
Hiif I divide a molar mass of an element by Avogadro's number (63022X10^23) will i have the mass of 1 atom of the element?
1. 2 answers
2. 834 views
Hiif I divide a molar mass of an element by Avogadro's number (63022X10^23) will i have the mass of 1 atom of the element?
1. 2 answers
2. 462 views
If 2 samples of nitrogen (different PVTs) are separated by a conductive barrier, they will eventually achieve equilibrium, I
1. 4 answers
2. 464 views
Would someone check my thinking please.PVT of an ideal gas (nitrogen) are all given. I've used PV=nRT rearranged to get the
1. 3 answers
2. 538 views
For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.)with just these,
1. 1 answer
2. 477 views
For a child's swing in lightly damped SHM, I am given the time period and a value for g; (as well as the mass.)with just these,
1. 0 answers
2. 488 views
2 spheres, of unequal masses, hang on strings and are touching. Sphere a is pulled back to the left, string taught, and
1. 4 answers
2. 552 views
A pendulum of a given mass is pulled back through a given vertical height and released to swing back down to a 'wall' where it
1. 2 answers
2. 557 views
A pendulum of a given mass is pulled back through a given vertical height and released to swing back down to a 'wall' where it
1. 0 answers
2. 452 views
Am self studying SHM, so sorry for the elementary questions.Would someone check/confirm some facts i think I've learned please.
1. 2 answers
2. 553 views
Whether or not it'll help me, am i safe to deduce that:If a simple pendulum is released from rest at time t=0; from a
1. 1 answer
2. 949 views
If a space station must"provide one sixth the magnitude of the acceleration due to gravity on Earth" Can I use 9.81ms^-2/6 or is
1. 2 answers
2. 520 views
I have to do calculations based upon a bow shooting an arrow vertically, and I have to state any assumptions i'm making.Am I
1. 2 answers
2. 953 views
what's the most commonly overlooked reason for forgetting?
1. 1 answer
2. 354 views
what are 3 types of symbiosis
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2. 431 views
in to kill a mocking bird who leaves their shoes at the school??? who does scout escort home?? whoes education does atticus help
1. 1 answer
2. 539 views
why are the lengths of days in spring and autumn the same?if the sun does not set, why is it so cold?
1. 1 answer
2. 390 views
Sorry, you're so quick, I took one of your answers for another question!Finally, Therefore, given my scenario, I could use the
1. 2 answers
2. 406 views
If I have a function f(x), and am given its derivative, f'(x): may I take it as a given that f(x) is an integral of f'(x).My
1. 5 answers
2. 623 views
complete subject and simple subject of this sentence.Ties in fancy boxes are gifts for some valentines.
1. 1 answer
2. 1,154 views
complete subject and simple subject of this sentence.They can be funny or serious.
1. 1 answer
2. 691 views
whats another word for private?http://www.answers.com/private Scroll down and look for <b>synonyms</b>. =)
1. 0 answers
2. 1,142 views
What caused the British government to take action with regard to the atrocities committed in the Congo by King Leopold's
1. 0 answers
2. 482 views
Offer evidence to prove that the Congo Free State violated Articles I,V,and VI of the Berlin Act of 1885.Check this answer.
1. 0 answers
2. 822 views
given: 1st derivative is2(2-3x-2x^2)/(1+x^2)^2 (quotient rule) I've found the stationary points to be x=1/2 and x=-2 Am I on the
1. 0 answers
2. 503 views
Can someone point me to a starting point in graphingf(x)= 25/cos x If it weren't a fraction and a cosine, I'd try to build a
1. 0 answers
2. 357 views
hello,i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled
1. 0 answers
2. 1,170 views
Please help i am on a dead line and am stuck on this question,Gametes produced in the process of meiosis in humans (chromosome
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2. 601 views
Thank you for answering my question.Can you steer me to making a quadratic from 1/4(x+3)^2-4 Then I can get the intercepts.
1. 0 answers
2. 479 views
I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO:what's the quadratic form of
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2. 706 views
what's the quadratic form of1/4(x+3)^2-4 I need it to find the intercepts of the parabola it describes. Check: I think the
1. 0 answers
2. 645 views