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4 years ago

14

Several studies linking cigarette smoke to health problems have resulted in the banning of smoking in many public places. This i

s an example of:
A. ways scientific theories become scientific laws
B. ways science influences society
C. ways scientist communicate results
D. ways scientific hypothesis are tested

2 answers:

Kryger [21]4 years ago

6 0

Society is basically a community of people and the way they live. The study on smoking is definitely science. So it would be b.

Nesterboy [21]4 years ago

5 0

Answer:

ways science influences society!! =)

Explanation:

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What did Ernest Rutherford's experiment of a beam of alpha particles aimed

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Answer:

B - Only a concentration of mass in the nucleus could explain the deflection of the incident particles.

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3 years ago

You place 100 grams of ice, with a temperature of −10∘C, in a styrofoam cup. Then you add an unknown mass of water, with a tempe

Masteriza [31]

Answer:

Mass of water 2.9g

Explanation:

Ice

$m_{ice}=100g$

$c_{ice}=2J/g.K$

$T_{ice,initial}=-10\°C$

$T_{ice,final}=T_{equilibrium}=-5\°C$

Water

$c_{water}=4J/g.K$

$T_{water,initial}=10\°C$

$T_{water,final}=0\°C$

$T_{equilibrium}=-5\°C$

$l_{water}=300J/g$

$m_{water}=?g$

Step 1: Determine heat gained by ice

$Q_{ice}=m_{ice}c_{ice}(T_{ice,final}-T_{ice,initial})$

$Q_{ice}=100*2*(-5--10)$

$Q_{ice}=1000J$

Step 2; Determine heat lost by water

$Q_{water}=m_{water}c_{water}(T_{water,initial}-T_{water,final})+m_{water}l_{water}$

$Q_{water}=m_{water}*4*(10-0)+m_{water}*300$

$Q_{water}=40m_{water}+300m_{water}$

$Q_{water}=340m_{water}$

Step 3: Heat gained by ice is equivalent to heat lost by water

$Q_{ice}=Q_{water}$

$1000=340m_{water}$

$m_{water}=2.9g$

6 0

4 years ago

5. The equation shows the formation of nitrogen and hydrogen. What effect does increasing the pressure have on this equilibrium?

bezimeni [28]

more hydrogen and nitrogen form

Hope this helps :)

6 0

3 years ago

3. Mario is planning to conduct an experiment to determine which disinfectant is best for killing bacteria that are often found

Sloan [31]

Answer:

I would say D

Explanation:

The dependent variable is the thing that is measured when the independent variable is changed by us.

The independent variable would be the type of disinfectant so after you use the disinfectant you would measure the amount of bacteria meaning the answer would be D

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3 years ago

Why is earths core so hot?

Luda [366]

Hello!

Answer and explanation:

There are three main sources of heat in the deep earth:

1) heat from when the planet formed and accreted, which has not yet been lost.

2)frictional heating, caused by denser core material sinking to the center of the planet.

3) heat from the decay of radioactive elements.

Have a good day

4 0

3 years ago

Read 2 more answers