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4 years ago

The speed and direction of a moving object referred to as which of the following

Physics

1 answer:

anygoal [31]4 years ago

6 0

Answer:

velocity.

Explanation:

velocity includes both speed and direction of the motion!

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The junction rule describes the conservation of which quantity? Note that this rule applies only to circuits that are in a stead

Fed [463]

Answer:

a) Current.

Explanation:

The "junction rule" (Kirchhoff's first law) says that the value of the electric current entering any point in the circuit must be the same as the one leaving it. This comes as a consequence of the conservation of charge, the electric charge that comes in must come out (when speaking about currents, per unit time).

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3 years ago

Can an electron be found in an exact spot within an atom

jolli1 [7]

No, it is impossible to determine the exact location of an electron. This is because electrons don't have a definite position, and direction of motion, at the same time and its movements are unpredictable

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3 years ago

A person pulls a bucket of water up from a well with a rope. Assume the initial and final speeds of the bucket are zero (Vi-Vf-0

n200080 [17]

Answer:

This a closed system because the mass of the system is conserved

The energy system that undergoes change is the Potential energy system

The energy system diagram is shown on the first uploaded image

Work done = Change in gravitational potential energy

So solving algebraically for work done would be

Work done = $m*g*h$

where m is mass

g is acceleration due to gravity

and h is the height

Work done in terms of force and distance is = mg

where m is mass of bucket and

g is acceleration due to gravity

Explanation:

a) At the start, potential and kinetic energy were zero. so, energy is zero.

As the person pulls the bucket up, the potential energy becomes mgh.

so,final energy will be consisting of only potential energy.

B) Here work done is equal to change in gravitational potential energy.

W = $\Delta P.E$

W = m*g*h

where g = 9.9 m/ $s^2$

C) Work = force * distance

mgh = force * h

force = mg

force = weight of bucket

6 0

3 years ago

A symbol with which you can rotate a graphic to any angle and that displays above the top center sizing handle

lions [1.4K]

Rotational handle is a symbol with which you can rotate a graphic to any angle and that displays above the top center sizing handle.
Anchor on the other hand is the symbol that indicates the paragraph to which and image is attached, alignment is the placement of paragraph text relative to the left and right margins.

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3 years ago

What is meant by gravitational field strength at a point in the gravitational field

DerKrebs [107]

Answer:

Explanation:

The gravitational field strength at a point is the gravitational force exerted per unit mass placed at that point. This means that the gravitational field strength, g {\displaystyle g} is equal to the force experienced by a mass of 1 kg in that gravitational field.

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3 years ago