09/15/16

A car traveling 30 kilometers \hour hits a deer and stops in 3 seconds. What is the average acceleration of the car
The answer must be in meters per second  
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09/15/16

Find the real or imaginary solutions to 7x^2-2=0 using the quadratic formula
I know the basic concept but cant do this one
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09/15/16

write the equation in standard form for a circle with center (-7,4) and tangent to the x-axis
i need to figure this out
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09/15/16

Calculate the amount of heat required to heat a 1.5 kg gold bar from 21°C to 68°C
I really need help with this chemistry because I don't want to fail. I need to become a doctor so I can make my late grandpa happy. He was my hero and role model the most important person I know
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09/15/16

The displacement of a harp string
The displacement, x, in millimeters, of a harp string, t, seconds after it is initially plucked is modeled by the function, x(t)=12sin(20πt)   a) what are the amplitude and period of this... more
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09/14/16

Specific heat chemistry problem
A 34.86 g sample of a substance is initially at 27.5 °C. After absorbing 1699 J of heat, the temperature of the substance is 148.1 °C. What is the specific heat (c) of the substance?
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09/14/16

what is the formula to get the answer to question below
there are 24 hours in a day and scientists tell us that we should sleep for 3/8 of the day. How much time should we spend sleeping?
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09/14/16

A bottle of water is 1/2 full. You drink 2/3 of the bottle. How much of the bottle did you drink?
My book says I have to multiply  1/2 by 2/3.  
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09/14/16

What is the slope of the equation 3x=-y-5
It asks what the slope of the question is  
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09/14/16

Perpendicular Graphing #20
Write the equation of the line perpendicular to y= -2 that passes through (5, -3).
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09/14/16

Direct Variation #21
Y varies directly with x and y is 20 when x is 5. Find the constant of variations, write variation equation and find y when x= -5, -1, and 10.
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09/14/16

Physics problem?
An object is dropped from rest.    a. 5 seconds later, what is it's speed?   b. At that point, what is the position with respect to the starting point?
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09/14/16

write equation in its equivalent logarithmic form 2^3=8
logarithmic form
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09/14/16

write equation in its equivalent exponential form log^6 216=y
logarithms
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09/14/16

Kristen has 7.5 mL of water and her lab partner Rebecca has 2.3 L. How many mL do they have?
We are to use the extended metric map to make the necessary conversion for the challenge problem.  
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09/13/16

If Max starts gets an A on a quiz (10/10) and then a C ( 7/10) on the next, what's his grade?
Quizzes are worth 10 percent and that is all he's done so far. Is there any way to do this? Thanks.
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09/13/16

how do i graph x+y=3 and how do i know if its linear or not?
we need to graph the equation by finding and plotting ordered-pair solutions with that equation
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09/13/16

The freezing point of oxygen is -218.79 C and hydrogen is -252.8 C. Which freezes first? How much colder does it have to be for both to freeze?
It's an integer word problem.
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09/13/16

wavelength
These are all lines observed that correspond to the emission spectrum when an excited one electron ion relaxes to the n = 4 state. The wavelength of the B line is 455nm. What is the wavelength on... more
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09/13/16

wavelength
One of the emission lines for a one electron ion has a wavelength of 30.28nm for ni=4 and nf=2. The 253.4nm line has an initial state of 5. What is the quantum number of the final state for this line? more
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09/13/16

Astrophysics question
Object A emits most strongly at 400 nm, while object B emits most strongly at 800 nm. What can we say about their relative temperatures? A’s temperature is the same as B’s.Nothing. Temperature is... more
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09/13/16

assume that the electric potential field in a certain region phi(x,y,z) = ay, where a is a constant. compute the electric field vector E in this reigion
how to compute E field from E potential
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09/12/16

which derivative is described by the following equation lim h approaches 0 of ((2^(3+h) - 2^3))/h
limit as h approaches 0 of 2 ^ (3+h) -2^3 all over h   a) g prime (3) where g(x) = 2^(3+x)   b) g prime (3) where g(x) = 2^x
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09/12/16

I have a physics/astronomy question
What’s a black hole? What’s the difference between a reflecting and refracting telescope?
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09/12/16

Find the x-component of vector d? = (130 m , 35 ° below +x-axis).
Hi, I need some help understanding this question for my test : Find the x-component of vector d? = (130 m , 35 ° below +x-axis).   When they say below the below + x axis, is it the 1st quadrant ?... more
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