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2 years ago

Which of the following correctly arranges the planets by the size of their diameter in increasing order?

Physics

1 answer:

Oksanka [162]2 years ago

6 0

Answer:

Mercury<Venus<Earth<Mars<Jupiter< Saturn< Uranus<Neptune

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A very light ideal spring having a spring constant (force constant) of 8.2 N/cm is used to lift a 2.2-kg tool with an upward acc

vampirchik [111]

Answer:

x = 3.5 cm

Explanation:

When spring is used as a lift tool

so the mass suspended on it will have spring force on it

So as per the force equation of mass we can say

$F_{net} = ma$

now net force on the mass is

$F_{net} = kx - mg$

$F_{net} = kx - mg = ma$

here we have

$kx = mg + ma$

now we have

$x = \frac{mg + ma}{k}$

$x = \frac{2.2(9.8) + 2.2(3.25)}{8.2}$

$x = 3.5 cm$

6 0

4 years ago

What happens to the density of a substance as its temperature increases?

Dimas [21]

The molecules spread apart, so they take up more space. Because of this, they are less dense.

This means the density decreases as temperature increases.

7 0

3 years ago

You are part of a mission to Mars and have been assigned the task of designing balloons for the purpose of carrying scientific i

melomori [17]

Answer:

The radius of the balloon is R= 0.974 m

Explanation:

Atmospheric density on the surface of mars ρ = 0.0154 kg/m³

Mass density of balloon σ 5 gm/m² = 0.005 kg/m²

Total mass of balloon M = density of balloon* surface area

The balloon is considered as sphere

Surface area of sphere is given by 4π R²

Mass of balloon is M =σ *4πR²

M= (0.005 kg/m²)*(4π R²)

Volume of balloon is given by $\frac{4}{3}$ πR³

Density of atmosphere of mass is given by

ρ = Mass of balloon/volume of balloon

=(0.005 kg/m²)*(4π R²)/ $\frac{4}{3}$ πR³

Re arranging R

R = $\frac{3*0.005 kg/m²}{ 0.0154 kg/m³}$

R = 0.974 m

The radius of the balloon is R= 0.974 m

3 0

4 years ago

Static charge develops on a substance as it acquires or loses protons due to friction.

Kipish [7]

True because once it builds up enough + or - charges

5 0

3 years ago

NEED ANSWER ASAP!!!

xenn [34]

Answer:

Explanation:

it has high pressure of speed

3 0

3 years ago