Convert 93 nanometer to meters.

Answers

Answer 1

Answer:

Answer:

9.3e-8 Meters

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What is meant by the following statement? "Inertia is directly proportional to mass." Inertia and mass are the same thing. Inertia and mass are the same size. Inertia increases as mass decreases. Inertia increases as mass increases.

Answers

Inertia increases as mass increases.

Explanation:

Inertia is the resistance of an object to any change in motion. Inertia is proportional the mass of the object: in fact, as we experience in common situations, the larger the mass of an object, the more difficult it is to change its motion.

A simple example: while it is quite easy to stop a tennis ball thrown towards us, we know that it is not so easy to stop a large truck travelling towards us with the same speed: the reason for that is that the truck has much more mass than the tennis ball, so it has much more inertia. Therefore, inertia increases as mass increases.

inertia increases as mass increases. In fact, mass is what causes inertia

Why do the densities of most substances decrease with an increase in temperature?

Answers

because density is related to activity of particles, the higher the activity level (the faster they're moving, and distance between them) the less dense they are. for example, H2O in a solid the particles are close together with minimum movement and it exists as ice, but when heat is applied the particles become more active and move more decreasing the density becoming liquid water, then when excessive heat is applied the same occurs and it becomes gas steam

How much work is required to move3.0 coulombs of electric charge a distance of
0.010 meter through a potential difference of
9.0 volts?
(1) 2.7 × 10^3 J (3) 3.0 J
(2) 27 J (4) 3.0 × 10^−2 J

Answers

So we want to know how much work is needed to move a charge Q=3C for a distance r=0.01m trough a potencial difference U=9V. Work of electric potential is defined as W=Q*U and we can now simply put in the numbers. We get: W=3C*9V=27J. So the correct answer is (2) 27J.

A hollow steel ball of diameter 3.0 m barely floats in water. What is the thickness of the wall of the ball? The density of iron is 7.87 g/cm3 and that of water is 1000 kg/m3. A) 37 cm B) 6.6 cm C) 79 cm D) 131 cm

Answers

Answer:

B) 6.6 cm

Explanation:

density steel 7750 to 8050 kg/m³, use 7870

density of water at 20C = 0.998 g/cm³ = 998 kg/m³

Note, the overall density must be equal to that of water, 998 kg/m³

density is the ratio of mass of a body to its volume

volume = V = ⁴/₃πr³ = ⁴/₃π(1.5)³ = 14.14 m³

Mass = 998 kg/m³ x 14.14 m³ = 14109 kg

Density of steel = 7870 kg/m³ = 14109 kg / V

V = 1.79 m³

deduct 1.79 m³ from the total volume of 14.14 m³

Volume of shell is ⁴/₃πr1³ – ⁴/₃πr2³ = ⁴/₃π(r1³ – r2³) = 1.79

divide ⁴/₃π from both sides

r1³ – r2³ = 0.428 m³

r2³ = (1.5)³ - 0.428

r2 = 1.434

to get the thickness we say that

the radius of the hollow steel ball -the radius of the ball

Thickness is 1.5 – 1.434 = 0.066 m or 6.6 cm

Do humans impact Earth's climate?

Answers

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness.

Yes we do by driving cars and cutting down trees. This effects the Earth's climate.

Two objects have mass 8 kg and 25 kg. Which one has more inertia?""

Answers

Answer:

the 25 kg one

Explanation:

The higher the weight the higher the inertia.
lets suppose we blow wind at both of these objects at a very high rate equally, u will notice after some time depending on the strength of wind the 8kg object will probably move earlier than the 25 kg one.

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