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lara31 [8.8K]
3 years ago
7

Someone please help with this question

Physics
1 answer:
Alex787 [66]3 years ago
5 0
The first one might be faunal succsession and the 2nd one might be metamorphic rock
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You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it reaches a maximum height h. Wha
Rasek [7]

Answer:

K/2

Explanation:

The law of conservation of mechanical energy states that the sum of the kinetic and potential energies is a constant at any point.

At maximum height, the glove has purely potential energy but at the bottom, it has purely kinetic energy.

The potential energy at the top = kinetic energy at the bottom. The potential energy is given by

PE = mgh

At half height, this potential energy is

PE = \frac{1}{2}mgh

At this height, PE + KE = Constant = KE at bottom or PE at maximum height.

mgh = \frac{1}{2}mgh +KE

KE = \frac{1}{2}mgh = K/2

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3 years ago
Light traveling through air strikes the surface of the four different materials below. which material reflects light but doesn't
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When monochromatic light illuminates a grating with 7000 lines per centimeter, its second order maximum is at 62.4°. what is the
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When red light illuminates a grating with 7000 lines per centimeter, its second maximum is at 62.4°. What is the wavelength of this light?

ans: 633nm

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3 years ago
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A(n) ? is a premises wiring system whose power is derived from a source of electric energy or equipment other than a service. Su
Evgen [1.6K]

Answer: Separately derived system

Explanation: A separately derived system is used to describe a premise wiring system whose power is derived from a source of electrical energy such as transformer, solar photovoltaic cell or generator. A separately derived system has no direct connection to any conductor from another system or doesn't generate it's power from any direct connection to a conductor from another system or source except those from established from bonding or grounding connections. Separately derived systems usually generate it's power on it's own.

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If a baseball travels a distance of 4 meters in 5 seconds, what is its average speed
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Answer:

speed=d/t.

s=4/5=0.8m/s.

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