Ask question

Ask question

All categories

3 years ago

13

I know the correct answers, I just can’t explain how I got them. Someone help. Thanks!

1 answer:

Sindrei [870]3 years ago

4 0

-9+1+(-1/2)+0.8+8.9=6/5
-3.1+3+(-7)+0.9+11=4.8

You might be interested in

Determine the equation of the line that goes through the points (-2, 1) and (1, -1).

yKpoI14uk [10]

Answer:(2,3)

Step-by-step explanation:

y2-y1/x2-x1

3 0

4 years ago

Read 2 more answers

A student on a piano stool rotates freely with an angular speed of 2.85 rev/s . The student holds a 1.50 kg mass in each outstre

Vlad1618 [11]

Answer:r'=0.327 m

Step-by-step explanation:

Given

$N=2.85 rev/s$

angular velocity $\omega =2\pi N=17.90 rad/s$

mass of objects $m=1.5 kg$

distance of objects from stool $r_1=0.789 m$

Combined moment of inertia of stool and student $=5.53 kg.m^2$

Now student pull off his hands so as to increase its speed to 3.60 rev/s

$\omega _2=2\pi N_2$

$\omega _2=2\pi 3.6=22.62 rad/s$

Initial moment of inertia of two masses $I_0=2mr_^2$

$I_0=2\times 1.5\times (0.789)^2=1.867$

After Pulling off hands so that r' is the distance of masses from stool

$I_0'=2\times 1.5\times (r')^2$

Conserving angular momentum

$I_1\omega =I_2\omega _2$

$(5.53+1.867)\cdot 17.90=(5.53+I_o')\cdot 22.62$

$I_0'=1.397\times 0.791$

$I_0'=5.851$

$5.53+2\times 1.5\times (r')^2=5.851$

$2\times 1.5\times (r')^2=0.321$

$r'^2=0.107009$

$r'=0.327 m$

7 0

4 years ago

Suppose that 16-ounce bags of chocolate chip cookies are produced with weights that follow a Normal distribution with mean weigh

tatyana61 [14]

I think the answer is C but I’m not sure

6 0

3 years ago

A. -10+(+10)<br> b.-13+(-13)<br> c. -11 + 0

DochEvi [55]

A is 0
B is-26
C is -11

5 0

3 years ago

Read 2 more answers

PLEASE HELP WILL MARK BRAINLIST!!!!

Julli [10]

UV/TW=UX/WX this is the answer

8 0

2 years ago