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3 years ago

10

A particular eco solar system has five planets in total a b c d and e the table lists the orbital periods of these planets in da

ys
will mark brainliest !!!

1 answer:

nadezda [96]3 years ago

5 0

Kepler's Law (3)

T² ≈ r³

The square of the orbital period ≈ the cube the distance to the sun

The farther away the planet is, the bigger the radius, the bigger the period

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Which of the statements best describes the relationship between the surface of an object and the amount of friction it produces?

BlackZzzverrR [31]

C.) The rougher the surface of an object, the more friction it will produce.

think of sliding a rock on the street

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3 years ago

A constant force of 40N acting on a body initially at rest gives it an acceleration of 0.1m/s inverse 2 for 4s .calculate the wo

kicyunya [14]

Correct Answer: Option C

<em>Explanation </em>

X = ut + 12at2

= (0 x 4) + (12 x 0.1 x 4 x 4)

= 0.8m

workdone = force x distance

= 40 x 0.8

= 32J

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3 years ago

Select the correct answer. Which of Newton's laws explains why your hands get red when you press them hard against a wall? A. Ne

STatiana [176]

Answer:

D newton third law

Explanation:

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3 years ago

A particle with charge 6 mC moving in a region where only electric forces act on it has a kinetic energy of 1.9000000000000001 J

Vesna [10]

Answer:

16.9000000000000001 J

Explanation:

From the given information:

Let the initial kinetic energy from point A be $K_A$ = 1.9000000000000001 J

and the final kinetic energy from point B be $K_B$ = ???

The charge particle Q = 6 mC = 6 × 10⁻³ C

The change in the electric potential from point B to A;

i.e. V_B - V_A = -2.5 × 10³ V

According to the work-energy theorem:

-Q × ΔV = ΔK

$-Q \times ( V_B - V_A) = (K_B - K_A)$

$-(6\times 10^{-3}\ C) \times ( -2.5 \times 10^3) = (K_B - 1.9000000000000001 \ J)$

$15 = (K_B - 1.9000000000000001 \ J)$

$K_B = 15+ 1.9000000000000001 \ J$

$\mathbf{K_B =1 6.9000000000000001 \ J}$

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3 years ago

A student pushes a 40-N block across the floor for a distance of 10 m. How much work was applied to move the block?

aleksandr82 [10.1K]

I think is C bc you just multiply <span />

3 0

3 years ago

Read 2 more answers