Physics homework , physics homework help

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Nyv1133

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12 hours

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Explanation & Answer

Attached are the solutions. Please let me know if you have any questions about these problems.I think they are all in problem number order, but I labelled each with the photo number as well, since the photos where not in problem number order.

Physics Homework.
1. (img_9639.jpg)
Begin by solving the equation for x. Then plug in known values to calculate the value for x.
y
z=
x
x∗ z= y
y
x=
z
5.6
x=
4.0
x= 1.4
Solution : x = 1.4
2. (img_9643.jpg)
a. Only the first choice is correct. The other 2 would be equal to each other but not the original
problem since only the x would be in the denominator.
b. a – b – c is correct. Remember you would have to distribute the negative sign into the parenthesis.
3. (img_9642.jpg)
Divide by other set of parenthesis. Then subtract b / c. If you want one fraction, make common
denominators and add the numerators. However that may not be necessary.
b
a+ (d − e )= f
c
b
f
a+ =
c d− e
f
b
a=

d− e c
f
c b d− e
a=
× − ×
d − e c c d− e
cf
bd − be
a=

c (d − e) c (d − e)
cf − bd + be
a=
c( d − e )

( )

Solution : a = (cf – bd + be) / c(d-e)
4. (img_9641.jpg)
Multiply b into the parenthesis. Make a common denominator on the right hand side. Multiply by the
denominator of the fraction. Move all terms with a c in to one side of the equation and everything else
to the other side. Factor a c out of each term. Divide to get c alone.

a...


Anonymous
Just the thing I needed, saved me a lot of time.

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