1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liberstina [14]
3 years ago
13

The center of mass is defined as a point on the straight line between two objects with masses m1 and m2 such that . What are the

coordinates of the center of mass?
Mathematics
2 answers:
STatiana [176]3 years ago
5 0
Let the point be P, and the masses be located at P1 and P2.

The centre of mass is such that the moments of masses m1 and m2 exert an equal moment at the point P,
and the distance P1P2=d
namely,

m1(mPP1)=m2(mPP2)
The distance of the centre of mass from m1 is therefore
d1=d*m2/(m1+m2)
Similarly, the distance of the centre of mass from m2 is
d2=d*m1/(m1+m2)
sveta [45]3 years ago
3 0

Answer:the answer is is D

Step-by-step explanation:

Use brainly.com to find ur answers

You might be interested in
A) what is the probability that the first contestant is a boy?
tamaranim1 [39]

Probabilities are used to determine the chances of an event.

  • The probability that the first contestant is a boy is 1/2
  • The probability that the second contestant is a boy, if the first is a boy is 9/19
  • The probabilities are not independent

The given parameters are:

\mathbf{Contestants= 20}

\mathbf{Girls= 10}

\mathbf{Boys = 10}

<u>(a) Probability that first contestant is a boy</u>

This is calculated as:

\mathbf{P(Boy) = \frac{Boys}{Contestants}}

This gives

\mathbf{P(Boy) = \frac{10}{20}}

\mathbf{P(Boy) = \frac{1}{2}}

<u>(b) Probability that the second contestant is a boy, if the first is a boy</u>

This is calculated as:

\mathbf{P(Boy) = \frac{Boys - 1}{Contestants - 1}}

We subtracted 1, because the first contestant (a boy) is no longer part of the selection.

So, we have:

\mathbf{P(Boy) = \frac{10-1}{20-1}}

\mathbf{P(Boy) = \frac{9}{19}}

<u>(c) Independent probabilities</u>

The probabilities are not independent, because when a contestant is selected, the number of contestant is reduced by 1.

And this will affect the probability of the next selection.

Read more about probabilities at:

brainly.com/question/11234923

7 0
2 years ago
Data from Ivy Tech's advising center shows the wait times as a normal distribution with the average as 20 min and a standard dev
fiasKO [112]

9514 1404 393

Answer:

  68%

Step-by-step explanation:

According to the empirical rule, 68% of the distribution lies within 1 standard deviation of the mean.

Here, the mean is 20 and the standard deviation is 5. The bounds on 1 standard deviation from the mean are 20±5 = [15, 25]. This is precisely the interval of interest.

  68% of students wait between 15 and 25 minutes

8 0
2 years ago
2 months ago, Blake used his credit card for a transaction of 400 dollars. The bank charges a rate of interest of
marta [7]
$206.27 per month is needed to payoff the balance in 2 months. Total interest is $12.54.
3 0
3 years ago
Read 2 more answers
A study is performed in San Antonio to determine whether the average weekly grocery bill per five-person family in the town is s
bogdanovich [222]

Answer:

No, the sample evidence is not statistically significant (P-value = 0.125).

To reject the null hypothesis, the P-value has to be smaller than the significance level, so the significance level to reject the null hypothesis has to be 0.125 or higher.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

Then, the null and alternative hypothesis are:

H_0: \mu=131\\\\H_a:\mu\neq 131

The significance level is 0.05.

The sample has a size n=50.

The sample mean is M=133.474.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=11.193.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{11.193}{\sqrt{50}}=1.583

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{133.474-131}{1.583}=\dfrac{2.474}{1.583}=1.563

The degrees of freedom for this sample size are:

df=n-1=50-1=49

This test is a two-tailed test, with 49 degrees of freedom and t=1.563, so the P-value for this test is calculated as (using a t-table):

P-value=2\cdot P(t>1.563)=0.125

As the P-value (0.125) is bigger than the significance level (0.05), the effect is  not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the average weekly grocery bill per five-person family in San Antonio is significantly different from the national average.

8 0
2 years ago
Two students were asked to find the value of a $1000 item after 3 years. The item was depreciating (losing value) at a rate of 4
Yuki888 [10]

Answer:

<em>Student 2 is incorrect because he didn't use the formula properly</em>

Step-by-step explanation:

The exponential function is often used to model natural growing or decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

C(t)=C_o\cdot(1-r)^t

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The initial value of the item is Co=$1000, the rate of decay is r=40%=0.4, and the time is t=3 years.

Substituting into the formula:

C(3)=\$1000\cdot(1-0.4)^3

C(3)=\$1000\cdot0.6^3

C(3)=$216

Student 2 is incorrect because he didn't use the formula properly

8 0
2 years ago
Other questions:
  • Janie was asked to bring water for her daughter's soccer team. The coach told her he wants each player to drink 1 8 gallon of wa
    13·2 answers
  • Khan academy creating box plots
    5·1 answer
  • Sophie has 42 notebooks and 35 folders. She wants to put the same amount of notebooks and folders into bags to sell. What is the
    7·2 answers
  • Umder what conditions can you use a normal distribution to approximate the binomial distrubution
    9·1 answer
  • Estimate the square root of 14 to two decimal places
    13·1 answer
  • I need help with this question
    8·1 answer
  • 18. Which number rounds to 0.94 when rounded to the nearesthundredth?
    13·2 answers
  • Use the fact that the length of an arc intercepted by an angle is proportional to the radius to find the arc length given the ci
    13·1 answer
  • What are the x-intercepts for the function f(x)=x2 + 2x - 15?
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csqrt%7B98%7D-%5Csqrt%7B200%7D%5C%5C" id="TexFormula1" title="\sqrt{98}-\sqrt{200}\\" alt="\
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!