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Vinil7 [7]
3 years ago
10

What is the answer please help me!

Physics
1 answer:
Juliette [100K]3 years ago
6 0

Answer:

The greatest force of gravity on the ball will occur at the point when the ball is near to hit the ground

Explanation:

We know that the earth's center attracts everything towards its center with an acceleration of 9.8 m/s² so it simply means that the change in velocity must occur to produce acceleration. When the ball comes towards the earth, its speed  continuously increases and it is at maximum level when it is about to hit the ground so this is the point where gravitational force is maximum.

I hope this helps ^_^

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What does intonation refer to select one of the options below as your answer:a. the change in the pitch (high or low sound of th
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I associate "Tone" with sound frequencies. Tonic solfa being a music example which is basically, I think, using a certain musical key signature such as C major. In a major scale the sequence of "musical intervals" (ie frequency steps) is  key note TONE TONE SEMITONE ... TONE TONE SEMITONE.octave higher than keynote.
So, I'd go for a here.
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The effective nuclear charge for an atom is less than the actual nuclear charge due to
Dmitrij [34]

Answer:

Repulsion

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3 0
4 years ago
A heat pump has a coefficient of performance that is 60% of the Carnot heat pump coefficient of performance. The heat pump is us
Nataliya [291]

Answer:

T_C=118.8 K= 154.2°C

Explanation:

COP_max of carnot heat pump= \frac{T_{H} }{T_{H}-T_{C} }

where T_H and T_C are temperatures of hot and cold reservoirs

Also COP=\frac{Q_H}{W}

in the question COP= \frac{60}{100} \times COP_{max}

⇒\frac{Q_H}{W} =\frac{60}{100}\times\frac{T_H}{T_H-T_C}

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Q_H= W

and T_H= 24° C= 297 K

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on calculating the above equation we get

T_C=118.8 K

the outdoor temperature for efficient addition of heat to interior of home

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6 0
3 years ago
How is a flywheel constructed to maximize its rotational inertia?
BigorU [14]

Answer:

It is constructed with a high mass and a high raidus.

Explanation:

The rotational inertia I for every object is calculated as:

cMR^2 = I

where c is a constant, M is the mass of the object and R the radius of the object.

So, for a flywheel, the rotational inertia is calculated as:

I = \frac{1}{2}MR^2

Then, for constructed a flywheel with the maximun rotational inertia we have to set the maximum mass and the maximun radius.

6 0
3 years ago
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