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3 years ago

8

in the design a thermos lab, you compared the temperature of your thermos with a container that you did not insulate. what was t

he container for?

1 answer:

irina [24]3 years ago

4 0

To see if the insulation would affect the temp of whatever you are measuring. <span />

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3 years ago

calculate the average speed of an athele who runs a distance of 100m in 16 s and an additional of 400m in a 44s

Delvig [45]

Explanation:

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3 years ago

A hockey stick strikes a hockey puck of mass 0.17 kg. If the force exterted on the hockey puck is 35.0 N and there is a force of

GREYUIT [131]

Answer:

$a=190\ m/s^2$

Explanation:

Mass of a hockey puck, m = 0.17 kg

Force exerted by the hockey puck, F' = 35 N

The force of friction, f = 2.7 N

We need to find the acceleration of the hockey puck.

Net force, F=F'-f

F=35-2.7

F=32.3 N

Now, using second law of motion,

F = ma

a is the acceleration of the hockey puck

$a=\dfrac{F}{m}\\\\a=\dfrac{32.3}{0.17}\\\\a=190\ m/s^2$

So, the acceleration of the hockey puck is $190\ m/s^2$ .

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3 years ago