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Blababa [14]
3 years ago
13

What common laboratory measuring device will we likely always use in experiments that measure enthalpy changes?

Physics
1 answer:
adelina 88 [10]3 years ago
5 0
The most common measuring device to be used in measuring enthalpy changes is the thermometer. 
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Explanation:

If the center of the load is directly above the vertebrae, there is no torque in the system. This is a good thing so that the vertebrae are not put out of alignment over time. (Of course, this still doesn't prevent compression of the vertebrae over time, which is a possibility.)

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A refrigerator is being pulled up a ramp with a horizontal force P, which acts at the top corner. The refrigerator has a mass of
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Answer:

(a) P = 459.055 N.

(b) the refrigerator tips.

Explanation:

Given, the angle of ramp is 20°.

When the weight of refrigerator is resolved in directions parallel and perpendicular to ramp, 75×g×sin(20°) and 75×g×cos(20°).

⇒ normal contact force is 75×g×cos(20°).

⇒ frictional force is 0.3×75×g×cos(20°) = 207.414 N

so, total opposite force is 207.414 + 75×g×sin(20°) = 459.055 N.

so, the force needed is P = 459.055 N

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4 0
3 years ago
Which statement about two objects having the same momentum is true?
Reil [10]

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The product of mass X velocity is the same for both

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The momentum of a body is the product of its mass and velocity.

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Two objects having equal momentum will have the same for the product of their mass and velocity.

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