3 years ago

Which law best describes this statement earth moves faster in the winter when its closest to the sun

Physics

1 answer:

kicyunya [14]3 years ago

8 0

Kepler's laws of planetary motion best describes the statement

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Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?

Wewaii [24]

The correct option is A.
Fluorescent lamps have many advantages over incandescent lamps and the options given in B, C and D are part of these advantages. The option given in A is a disadvantage and not an advantage. This is because, as a result of operating at an higher temperature, it will gives out and radiate more heat.

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3 years ago

Draw the following patterns as they would appear when viewed through a compound microscope.:

goblinko [34]

2 j x b
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You pull a solid nickel ball with a density of 8.91 g/cm3 and a radius of 1.40 cm upward through a fluid at a constant speed of

Sunny_sXe [5.5K]

Answer:

$P = 1.090\,N$

Explanation:

The constant speed means that ball is not experimenting acceleration. This elements is modelled by using the following equation of equilibrium:

$\Sigma F = P - W + F_{D}$

$\Sigma F = P - \rho \cdot V \cdot g + c\cdot v = 0$

Now, the exerted force is:

$P = \rho \cdot V \cdot g - c\cdot v$

The volume of a sphere is:

$V = \frac{4\cdot \pi}{3}\cdot R^{3}$

$V = \frac{4\cdot \pi}{3}\cdot (0.014\,m)^{3}$

$V = 1.149\times 10^{-5}\,m^{3}$

Lastly, the force is calculated:

$P = (8910\,\frac{kg}{m^{3}} )\cdot (1.149\cdot 10^{-5}\,m^{3})\cdot (9.81\,\frac{m}{s^{2}} )+(0.950\,\frac{kg}{s})\cdot (0.09\,\frac{m}{s} )$

$P = 1.090\,N$

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3 years ago

Lonic Naming Practice<br> Write the name of the following chemical compound:<br> Na3Cl1

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Answer:

sodium chloride. .....

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A scientist studies the impact of a drug on cancer.

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its both so write this

The independent variables are the administration of the drug - the dosage and the timing. The dependent variable is the impact the drug has on cancer.

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3 years ago