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Nuetrik [128]
2 years ago
13

Could you help me with a science question really quick?

Physics
1 answer:
Rama09 [41]2 years ago
4 0
Yea I would love to help u
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Which element has an atomic number of 9 and an atomic mass of 19?
yan [13]

Answer:

fluorine

Explanation:

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3 years ago
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A 1500 kg car, initially traveling at 22.0 m/s, hits its brakes and skids to a stop. Determine the work done by friction.
Sedbober [7]

Answer:

<em>The work done by the car is 363 kJ</em>

Explanation:

Work : Work is said to be done when a Force moves an object through a certain distance. Work and Energy are interchangeable because they have the same unit. The unit of work is Joules (J).

Mathematically work done can be expressed as,

E = W = 1/2mv²

W =  1/2mv²................................ Equation 1

Where E = Energy, W = work done, m = mass of the car, v = velocity of the car

<em>Given: m=1500 kg, v=22 m/s</em>

<em>Substituting these values into equation 1</em>

<em>W = 1/2(1500)(22)²</em>

<em>W = 750 × 484</em>

<em>W = 363000 J</em>

<em>W = 363 kJ</em>

<em>Thus the work done by the car is 363 kJ</em>

8 0
3 years ago
Which of the following is not a use of electromagnetic waves? a night-vision bremote controls c x-rays d all are used of electro
sergey [27]
Use of electromagnetic because it moves very faster than others for example  xrays theynar very very slow so that not It it is d.
4 0
3 years ago
1. f=
ahrayia [7]
1. F = 8 Hz
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3. D = 8 m
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5 0
2 years ago
Is god real??? i wanna know
NemiM [27]
In my opinion, yes the bible tell us that "For God so loved<span> the world that he gave</span><span> his one and only Son,</span><span> that whoever believes</span><span> in him shall not perish but have eternal life" 
So my answer is yes</span>
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3 years ago
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