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dem82 [27]
3 years ago
14

Which has more mass, a kilogram of feathers or a kilogram of iron?

Physics
2 answers:
Pavlova-9 [17]3 years ago
7 0
They weigh the same a kilo= a kilo
ad-work [718]3 years ago
3 0
It a kilogram of feathers because i learned it in science 

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When water freezes, its volume increases by 9.05%. What force per unit area is water capable of exerting on a container when it
AnnZ [28]

Answer:

The Pressure is 0.20 MPa.

(b) is correct option.

Explanation:

Given that,

Change in volume = 9.05%

{tex]\dfrac{\Delta V}{V_{0}}=0.0905[/tex]

We know that.

The bulk modulus for water

B=0.20\times10^{10}\ N/m^2

We need to calculate the pressure difference

Using formula bulk modulus formula

B=\Delta P\dfrac{V_{0}}{\Delta V}

\Delta P=B\dfrac{\Delta V}{V_{0}}

\Delta P=0.2\times10^{10}\times0.0905

\Delta P=0.2\times10^{6}\ Pa

\Delta P=0.20 MPa

Hence, The Pressure is 0.20 MPa.

6 0
4 years ago
Find the intensity in decibels [i(db)] for each value of i. normal conversation: i = 106i0 i(db) = power saw a 3 feet: i = 1011i
White raven [17]

Answer:

Normal Conversation: i=106i0

i(dB)=60

Power saw a 3 feet: i=1011i0

i(dB)=110

Jet engine at 100 feet: i=1018i0

i(dB)=180

Explanation:

if these are the same as edge, then these are the answers! :)

8 0
3 years ago
Read 2 more answers
Two balls are placed near one another and hang down, as shown below.
Delicious77 [7]

Answer:

<h2>a- neither ball has a charge</h2>

Explanation:

3 0
3 years ago
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A sample of gold has a mass of 38.6 grams and avolume of 2 cm3. What is the density of gold?
kirill [66]
Density is equal to mass divided my volume, so divide 38.6 by 2 to get the answer you need!
3 0
3 years ago
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Define 1 watt power?​
Bumek [7]

Answer:

A body is said to have power of 1 watt if it does work at the rate of 1 joule in 1 s. Watt is the SI unit of power. Other units of power include ergs per second, horsepower, metric horsepower or cheval vapeur (CV)), and foot-pounds per minute. The unit Watt is named after the scientist James Watt.

5 0
3 years ago
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