4 years ago

I'm doing something for science but I'm not sure how to answer these questions.

Physics

1 answer:

Tomtit [17]4 years ago

5 0

1, yeti hair is thick and strong

2, a warm blanket and a change of clothes

3, to circulate the heat around the house/room

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The number density of gas atoms at a certain location in the space above our planet is about 1.05 × 1011 m-3, and the pressure i

Anettt [7]

To solve this problem we will apply the concepts given by the ideal gas equation, which mathematically can be described as

$PV = NkT$

Here

P = Pressure

V = Volume

N = Number of atoms of molecules

k = Bolzmann constant

T = Temperature

Rearranging to find the temperature we have

$T = \frac{PV}{Nk}$

Since the value given in the exercise is a unit of atoms per volume, we will readjust the equation like this

$T = \frac{P}{\frac{N}{V}k}$

Replacing we have,

$T = \frac{(2.7*10^{-10}N/m^2)}{(1.05*10^{11}/m^3)(1.38*10^{-23}J/K)}$

$T = 186.3K$

$T = -86.81\°C$

Therefore the temperature is -86.81°C or 186.3K

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4 years ago

Water can exist in three states: solid (ice), liquid and gas (steam).In which state, or states, is the motion of the molecules o

bazaltina [42]

Answer:

solid

Explanation:

8 0

3 years ago

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A force of 166 N acts on a 7.05-kg bowling ball for .39 seconds . What is the bowling balls change in velocity

dimaraw [331]

Answer:

9.17 m/s

Explanation:

Impulse = change in momentum

FΔt = mΔv

(166 N) (0.39 s) = (7.06 kg) Δv

Δv = 9.17 m/s

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3 years ago

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_____ is the densest planet. Mercury Venus Earth Mars

Orlov [11]

The answer is Venus, with the density of 5.204 grams per cubic centimeter

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3 years ago

Chris shoots an arrow up into the air. The height of the arrow is given by the function h(t) = - 16t2 + 64t + 23 where t is the

Ghella [55]

Completing the square gives the answer right away.

$-16t^2+64t+23=-16(t^2-4t)+23=-16(t^2-4t+4-4)+23=-16((t-2)^2-4)+23$

$\implies h(t)=-16(t-2)^2+87$

which indicates a maximum height of 87 when $t=2$ .

7 0

4 years ago

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