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maw [93]
2 years ago
14

what will be the final temperature is 0.05kg water at 0 degree centigrade is added to 0.25kg pf water at 90 degree centigrade sp

ecific heat capacity of water is 4200J/kgk​
Physics
1 answer:
scoray [572]2 years ago
7 0

Q in = Q out

0.25 x 4200 x (90-t)=0.05 x 4200 x (t-0)

1050 (90-t)=210t

94500-1050t=210t

94500=1260t

t=75°

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I'm not sure what "60 degree horizontal" means.

I'm going to assume that it means a direction aimed 60 degrees
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Now, I'll answer the question that I have invented.

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-- 0.75 of its kinetic energy is due to its vertical velocity.
That much of its KE gets used up by climbing against gravity.

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3 years ago
The free body diagram shows a box being pulled to the left up a 25-degree incline
Greeley [361]
The question is incomplete but still I answer to assume your thinking.
The picture is attached below!.
Here,
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N is the normal force.
w is the weight acting downward.
Axis are mentioned in the attached picture.
Concept:
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5 0
3 years ago
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Alex777 [14]

Answer:

A) Out of the page.

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<u>Bottom wire</u>: Current is to the right. Point your thumb to the right and curl your other fingers around the wire. The tips of the four finger points out of the page again.

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Another method to figure out the direction is the mathematical method.

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The cross product between the direction of the current and the target position gives the direction of the B-field. If the left is -x direction and downwards is the -y direction, then

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Therefore both the cannonball and the ball will take the same amount of time to hit the ground if they are released/fired from the same height.

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Answer:

Explanation:

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