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VikaD [51]
2 years ago
13

5. Density equals mass divided by volume. If a

Physics
1 answer:
lidiya [134]2 years ago
4 0

Answer:

3 significant figures

Explanation:

23.523 has 5 significant figures that is the figures 2,3,5,2,3

17.5 has 3 significant figures that is the figures 1,7,5

Density is mass/volume (given in question)

Density is 23.523g/17.5L= 1.34417142857143 g/L (Without rounding off the answer)

This has 15 significant figures

However, for precision, the result is 1.34 g/L which has 3 significant figures.

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What are the two factors that affect the friction force between two surfaces
Masja [62]

Answer:

coefficient of static friction of the surface and the normal force

Explanation:

The coefficient of static friction of the surface and the normal force exerted on the surface given by equation F = μR

5 0
3 years ago
What is the unit for force?
Morgarella [4.7K]

Answer:

N / NEWTONS

Explanation:

Named after Isaac Newton, the man who discovered gravity

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An element's atomic number is 55. How many protons would an atom of this element have?
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The atomic number of an element is the number of protons the element has, so the element with the atomic number 55 has 55 protons.
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3 years ago
A carpenter lifts a 10-kg piece of wood to his shoulder 1.5 m above the ground. He then sets the wood on his truck at 1.0 m abov
FinnZ [79.3K]

Answer:

<em>500Joules</em>

Explanation:

Kinetic energy = 1/2mv²

m is the mass of the wood

v is the velocity

Given

Mass = 10kg

Velocity v = 10m/s

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KE = 1/2 * 10 * 10²

KE  = 1/2 * 1000

KE = 500Joules

<em>Hence the kinetic energy of the wood during delivery is 500Joules</em>

8 0
2 years ago
Net force is the sum of all the forces acting on an object. If a spring balance pulls on a body with a force of 10 N, and fricti
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Answer:

5N

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(25 N - 20 N = 5 N)

3 0
3 years ago
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