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Schach [20]
3 years ago
11

3 points

Physics
2 answers:
iVinArrow [24]3 years ago
8 0

Answer:

yes answer in 1 and 2 these is answer

azamat3 years ago
3 0

Answer:

1 and 2 because atomic number is equal to the numbers of protons in the nucleus

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One way to improve food security is to avoid food spoilage. Identify the correct ways that Devon reduced food spoilage in the pa
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The correct answer would be "He brought one serving to his neighbor's house, and stored the other two servings in the refrigerator. Devon ate one more serving or spaghetti the following day."

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If a loaded truck that accelerates at 1 meter per second squared loses its load and has three-fourths of the origional mass, wha
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3 years ago
4. With respect to a mass of 1kg. (a) How much change in elevation must it undergo to change its potential energy by 1 kJ? (g=9.
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Answer:

102 m upwards.

Explanation:

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Fixed that work being 1 kJ, we get

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2 years ago
Explain why surface tension occurs
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3 years ago
A team of dogs accelerates a 290kg dogsled from 0 to 6.0m/s in 3.0 s. Assume that the acceleration is constant.Part AWhat is the
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Answer:

(a) a=2m/sec^2

(b) 5220 j

(c) 1740 watt

(d) 3446.66 watt

Explanation:

We have given mass m = 290 kg

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Final velocity v = 6 m/sec

Time t = 3 sec

From first equation of motion

v = u+at

So a=\frac{v-u}{t}=\frac{6-0}{3}=2m/sec^2

(a) We know that force is given by

F = ma

So force will be F=290\times 2=580N

(b) From second equation of motion we know that

s=ut+\frac{1}{2}at^2=0\times 3+\frac{1}{2}\times 2\times 3^2=9m

We know that work done is given by

W = F s = 580×9 =5220 j

(c) Time is given as t = 3 sec

We know that power is given as

P=\frac{W}{t}=\frac{5220}{3}=1740Watt

(d) Time t = 1.5 sec

So P=\frac{W}{t}=\frac{5220}{1.5}=3466.66Watt

5 0
4 years ago
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