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3 years ago

Please help me on questions 3 and 6, thank you! :D I'll give brainliest!

Physics

2 answers:

KIM [24]3 years ago

6 0

3. To increase gravitational pull to the earth, the more mass an object has, the stronger the gravitational pull, so increase mass.

6. While sound energy depends on a medium, radiant energy uses it's own sources to stay independent from other mediums.

Anarel [89]3 years ago

4 0

Answer:

3. if you increase your mass you also increase the gravitational pull

6. Radiant energy doesn't depend on a medium and sound energy is dependent on a medium.

Explanation:

i hope this helps-

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A volumetric flask made of Pyrex is calibrated at 20.0°C. It is filled to the 150-mL mark with 34.5°C acetone. After the flask i

8_murik_8 [283]

Answer:149.73 ml

Explanation:

Given

$\beta \ of\ acetone=1.50\times 10^{-4} ^{\circ}C^{-1}$

change in volume is given by

$\Delta V=V_{final}-V_{initial}$

$\Delta V=\nu_{initial}\beta _{acetone}\left [ T_f-T_i\right ]$

$V_{final}=\nu_{initial}+\nu_{initial}\beta _{acetone}\left [ T_f-T_i\right ]$

$V_{final}=150+150\times 1.50\times 10^{-4}\left [ 20-32\right ]$

$V_{final}=149.73 ml$

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3 years ago

What would be the effect on the annual march of the seasons if earth's axis were not inclined relative to the plane of the eclip

victus00 [196]

The poles wouldn't get light all year round.

6 0

3 years ago

Romi and Sony are two brothers. They wanted to go to the library. Just as they were

lora16 [44]

Answer:

Here are the answers you need

a. Romi's speed = slope of graph = 1000/15 - 0 = 66m/min

b. for 10 minute

c. I do not know the answer for this question, please forgive me

d.at 1000m from home they meet

I hope this helps you.

May god bless you and if you like this answer and think it helped you very much please mark me as brainliest because that will help me very much.

6 0

3 years ago

A uniform bar has two small balls glued to its ends. The bar is 2.00 m long and has mass 4.00 kg, while the balls each have mass

Talja [164]

Answer:

a)1.93 kg-m^2

b) 1.45 kg-m^2

c) = 0

d) 1.15 kg-m^2

Explanation:

mass of the bar M = 4 kg

length of the bar = 2 m

mass of balls m1= m2= 0.3 kg

moment of inertia of bar $I= \frac{ML^2}{12}$

about an axis perpendicular to the bar through its center.

a) MOI of bar + 2×m×(L/2)^2

$I= \frac{ML^2}{12}$ + $2m\frac{L}{2}^2$

now putting the values of m, M and L as above and solving we get

I= 1.93 kg-m^2

b) perpendicular to the bar through one of the balls

$I=M\frac{L^2}{3} +mL^2$

$I=4\frac{2^2}{3} +0.3\times4^2$ = 1.45 kg-m^2

c) parallel to the bar through both balls

zero as the no mass distribution along the parallel to the bar through both balls.

d) parallel to the bar and 0.500 m from it.

I= $(M+2m_1)\frac{1}{2}^2$

putting values and solving we get

1.15 kg-m^2

4 0

4 years ago

Which of the following is a true statement? A. Electromagnetic waves consist of only changing electric fields. B. Electromagneti

just olya [345]

C. Electromagnetic waves don't always need a medium to travel. Note that they do vary in wavelength and frequency however their speed is fixed. Also, EM waves are always transverse and they consist of vibrating electric and magnetic fields.

7 0

4 years ago

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