2 years ago

Which feature of a heating curve indicates a change of state

1 answer:

3 0

Answer:

The diagonal or the inclined lines shows the changes in terms of temperature, and the horizontal lines shows the changing of phases.

Explanation:

hope it is useful

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Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One pa

Serga [27]

Answer:

Speed of river is 0.45 m/s

Speed of boat is 2.65 m/s

Explanation:

$v_r$ = Speed of river

$v_c$ = Speed of canoe

$v_r+v_c=2.8\ m/s$

$v_r-v_c=-1.9\ m/s$

Adding the equations we get

$2v_r=0.9\\\Rightarrow v_r=\frac{0.9}{2}\\\Rightarrow v_r=0.45\ m/s$

$0.42+v_c=2.8\ m/s\\\Rightarrow v_c=2.8-0.45\\\Rightarrow v_c=2.65\ m/s$

Speed of river is 0.45 m/s

Speed of boat is 2.65 m/s

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3 years ago

I need help with homework! what should i choose as the greatest british invention?

STatiana [176]

THE MINI Alec Issigonis, 1959
The Telephone Alexander Graham Bell, 1876

http://www.radiotimes.com/news/2013-01-08/the-50-greatest-british-inventions

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3 years ago

calculate the work done by a girl of mass 40 kg when she climbs a stair case of 20 steps each of height 10 cm and acceleration i

Volgvan

Answer:

i think its a 800x² hope you like it

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3 years ago

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When gases, liquids, or solids are in contact with a moving object, the flow of _____ occurs due to frictional forces

mariarad [96]

When gases, fluids, or other solids are in contact with a moving object

heat is produced due to friction.

7 0

3 years ago

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Define these terms about speed and state their units<br> speed<br>distance covered<br>time taken

Neporo4naja [7]

Explanation:

Speed is the rate of change of distance with time. It is a scalar quantity with magnitude both no direction.

Speed = $\frac{distance}{time}$

The unit is m/s or km/hr or mile/hr

Distance covered is simply the length of the path traveled.

The unit is m or km or miles

Time taken is the duration of an event.

The unit is seconds or minutes or hour.

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2 years ago