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katrin [286]
2 years ago
13

Which of the following substances could be heated from 20°C to 100°C most quickly? Assume identical heat sources are used on all

substances.
Physics
2 answers:
Alex73 [517]2 years ago
7 0
It gold I think ...........
Lera25 [3.4K]2 years ago
3 0
Hello There!

Your answer is Gold because it has the lowest SH

Hope This Helps You!
Good Luck :) 

- Hannah ❤
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Differentiate between rest and motion.
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<em>1</em><em>. </em><em>A body is said to be at rest if its position does not change with respect to its surroundings.</em>

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Suppose you first walk 12.5 m in a direction 20° west of north and then 24 m in a direction 40° south of west as shown in the fi
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2 years ago
During your summer internship for an aerospace company, you are asked to design a small research rocket. The rocket is to be lau
Viktor [21]

Answer:

6.75 seconds

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration = 16 m/s²

g = Acceleration due to gravity = 9.81 m/s²

Let y be the distance the rocket is accelerating

960-y is the distance traveled in free fall

v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 16\times y+0^2}\\\Rightarrow v^2=32y\ m/s

In free fall

v^2-u^2=2g(960-y)\\\Rightarrow 0-32y=2g(960-y)\\\Rightarrow -32y=2\times -9.81(960-y)\\\Rightarrow 960-y=\dfrac{-32}{2\times -9.81}y\\\Rightarrow 960-y=1.63098878695y\\\Rightarrow 960=2.63098878695y\\\Rightarrow y=\dfrac{960}{2.63098878695}\\\Rightarrow y=364.881828749\ m

The distance the rocket will keep accelerating is 364.881828749 m

After which it will travel 960-364.881828749 = 595.118171251 m in free fall

s=ut+\frac{1}{2}at^2\\\Rightarrow 364.881828749=0t+\frac{1}{2}\times 16\times t^2\\\Rightarrow t=\sqrt{\frac{364.881828749\times 2}{16}}\\\Rightarrow t=6.75353452598\ s

The time the rocket is accelerating is 6.75 seconds

5 0
3 years ago
What is carbon dating?
ratelena [41]

Answer:

Im pretty sure its number 2

Explanation:

7 0
2 years ago
Read 2 more answers
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