The length of a pipe will weigh the most when

1 answer:

6 0

When fluid is flowing through the pipe.

Why?

No fluid results in the following:

Sum forces in y-direction: sum F = ma, W_pipe + W_fluid = ma, however if there was no fluid it be W_pipe = ma.

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Why are nonmetals more likely to react with eachother by sharing electrons

RideAnS [48]

The answer is; non-metals have a high ionization energy

This means that it would take more energy to dislodge an electron from the valence orbital than it would take to do the same to a metal atom. Therefore it would be easier to share electrons for non-metals while it would be easier to lose an electron for metals to reach a stable electron configuration.

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3 years ago

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What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?

KATRIN_1 [288]

Answer:

v=53.3m/s

Explanation:

Ek=1/2mv²

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4 years ago

A cannonball has just been shot out of a cannon aimed 45∘ above the horizontal rightward direction. Drag forces cannot be neglec

Novosadov [1.4K]

Answer:

The free-body diagram of the cannonball is found in the attachment below

Note The question is incomplete. The complete question is as follows:

A cannonball has just been shot out of a cannon aimed 45∘ above the horizontal rightward direction. Drag forces cannot be neglected.

Draw the free-body diagram of the cannonball.

Explanation:

Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.

In order to construct free-body diagrams, it is important to know the various types of forces acting on the object in that situation. Then, the direction in which each of the forces is acting is determined. Finally the given object is drawn using any given representation, usually a box, and the direction of action of the forces are represented using arrows.

In the given situation of a cannonball which has just been shot out of a cannon aimed 45∘ above the horizontal rightward direction., the forces acting on it are:

F = force exerted by the cannon acting in the direction of angle of projection

Fdrag = drag force. The drag force acts in a direction opposite to the force exerted by the cannon

Fw = weight of the cannonball acting in a downward direction

The free body diagram is as shown in the attachment below.