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Ainat [17]
3 years ago
13

A pendulum is released from rest at point A. If the horizontal line represents the reference point, the pendulum has energy at p

oint B.
Physics
2 answers:
PSYCHO15rus [73]2 years ago
7 0

b i think

hope it helps ^^

Rzqust [24]2 years ago
6 0
Only kinetic

______________

Okay?


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Shorter the vibrating part more will be the pitch. How?​
Lina20 [59]

Answer:When the length of a string is changed, it will vibrate with a different frequency.Shorter strings have higher frequency and therefore higher pitch.

6 0
2 years ago
Which nucleus completes the following equation?<br> 212 86 Rn-&gt; 4 2 He+?
Inessa [10]

Answer:

A

Explanation:

208+4=212

84+2=86

The correct answer is A

3 0
1 year ago
-science
Misha Larkins [42]

Answer:

variations in great horned owl body size due to food supply can be acted on by natural selection.

Explanation:

Natural selection can help select great horned owl with smaller body size since it's an advantage in a place with smaller available food sources, compared to a bigger body size that will need more food. At first, birds with smaller body survive while those bigger ones die out, and the smaller birds pass on this genes to their offspring.

Answer:

variation in body size due to inherited traits can be acted on by natural selection

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Variations in body size in body size due to inherited trait can be acted upon by natural selection by favoring the size that is best suited for the survival of the species. Those with these genes survive and pass it on to their offspring, while those with the unfavorable body size are wiped out.

3 0
2 years ago
Jeff is part of a trekking team. As he climbs a hill, he drops his water bottle, which has a mass of 0.25 kilograms.
yulyashka [42]

The vertical height from where Jeff dropped the bottle is 10m.

<h3>What is free falling?</h3>

When an object is released from rest in free air considering no friction, the motion is depend only on the acceleration due to gravity, g.

If we drop an object of mass m near the Earth surface from a height h, it has initial mechanical energy(P.E) of

U =mgh

When the object strikes the ground, all the potential energy converted into kinetic energy.

k.E = 1/2mv²

where v is the speed just before hitting the ground.

From energy conservation principle, initial and final mechanical energy are equal.

mgh = 1/2mv²

Given is Jeff climbs a hill. He drops his water bottle, which has a mass of 0.25 kilograms. The bottle slides down the hill and is moving at a velocity of 14 meters/second the instant it hits the ground.

The height from which bottle could fall is

h = v²/2g

Substitute the values, we get

h = (14)²/(2x9.81)

h =9.99 m

Thus,  vertical height from where Jeff dropped the bottle is approximately  10m.

Learn more about free falling.

brainly.com/question/13299152

#SPJ1

8 0
1 year ago
The number of molecules in 48.0 grams of oxygen gas o2 is
jolli1 [7]

Answer:

9.03 times 10times 23 calculate it and there ya go

5 0
2 years ago
Read 2 more answers
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