Question

A 3.4

Answer #1

r1 due to first charge is

theta=tan-1 (2.2/1.9)=49.18

r1=1.9/Cos49.18=2.91m

E1=kq1/(r1)^{2}==9x10^{9}x3.4x10^{-6}/(2.91)^{2}=3613.6N/C

similarly

r2 due to first charge is

theta=tan-1 (2.2/3.2)=34.51

r2=1.9/Cos34.51=3.88m

E2=kq2/(r2)^{2}==9x10^{9}x3.3x10^{-6}/(3.88)^{2}=1972.8N/C

E_{tx}=3613.6Cos49.18+1972.8Cos34.51=2362.2+1625.64=3987.8N/C

E_{ty}=3613.6Sin49.18+1972.8Sin34.51=2734.65+1117.69=3852.34N/C

Et=sqrt(E_{tx}^{2}+E_{ty}^{2})=sqrt(3987.8^{2}+3852.34^{2})=5544.64N/C

direction of electric field is tan-1
(3852.34/3987.8)=44.01^{o}

direction of electric field from the positive x-axis is
=135.9^{o}

A 3.4

An industrial chemist introduces 3.4 atm H2 and 3.4
atm CO2 into a 1.00-L container at 25.0°C and then
raises the temperature to 700.0°C, at which Keq =
0.534:
H2(g) + CO2(g) ⇔ H2O(g) +
CO(g)
How many grams of H2 are present after equilibrium is
established?

Consider the following data set.
4.6
3.3
3.6
3.8
3.4
3.8
4.4
4.7
3.7
3.4
4.4
4.3
4.0
3.8
4.4
4.5
3.5
4.1
4.3
3.9
3.5
3.4
3.8
3.9
1. Recall the proper memories to find the mean.
2. Recall the proper memories to find the standard deviation.
(Round your answer to four decimal places.)
3. Calculate the range.
4. The range is approximately how many standard deviations?
(Round your answer to one decimal place.)
The range is approximately ___...

Test the claim that the mean GPA of night students is larger
than 3.4 at the 0.10 significance level.
The null and alternative hypothesis would be:
H0:p=0.85H0:p=0.85
H1:p≠0.85H1:p≠0.85
H0:μ≥3.4H0:μ≥3.4
H1:μ<3.4H1:μ<3.4
H0:p≥0.85H0:p≥0.85
H1:p<0.85H1:p<0.85
H0:p≤0.85H0:p≤0.85
H1:p>0.85H1:p>0.85
H0:μ=3.4H0:μ=3.4
H1:μ≠3.4H1:μ≠3.4
H0:μ≤3.4H0:μ≤3.4
H1:μ>3.4H1:μ>3.4
The test is:
two-tailed
left-tailed
right-tailed
Based on a sample of 75 people, the sample mean GPA was 3.41 with a
standard deviation of 0.03
The test statistic is: (to 2 decimals)
The p-value is: (to 2 decimals)
Based on this we:
Fail to...

A 3.4 kg block moving with a velocity of +4.0 m/s makes an
elastic collision with a stationary block of mass 1.9 kg.
(a) Use conservation of momentum and the fact that the relative
speed of recession equals the relative speed of approach to find
the velocity of each block after the collision.
______m/s (for the 3.4 kg block)
______m/s (for the 1.9 kg block)
(b) Check your answer by calculating the initial and final
kinetic energies of each block....

What nominal rate, compounded daily, is equivalent to 3.4%
compounded monthly?

A spherical balloon is inflated so that its volume is increasing
at the rate of 3.4 ft^3/min.
How rapidly is the diameter of the balloon increasing when the
diameter is 1.7 feet?

3.4. Determine if the3.4. Determine if the X and Y are
statistically independent? Hint: (fx x y dx dy = 1)

Find the margin of error for the given values of c, s, and
n.
c=0.80,
s=3.4,
n=14

If the solution of a difference equation is
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, then determine the difference equation (with initial value). Show
the steps needed to arrive at the answer.

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