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3 years ago

Solids, liquids, and gases are very often depicted as groups of particles inside containers of fixed shape and dimension.

Physics

1 answer:

liberstina [14]3 years ago

4 0

Answer:

The answer would be B

Explanation:

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Oxygen forms many compounds.<br> Which two compounds of oxygen are small molecules?

Liono4ka [1.6K]

Answer:

Water and Oxides such as iron oxide or rust

Explanation:

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3 years ago

The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes it 0.90 s to reach the floor. Wha

Anna007 [38]

Answer:

The mass of the another block is 60 kg.

Explanation:

Given that,

Mass of block M= 100 kg

Height = 1.0 m

Time = 0.90 s

Let the mass of the other block is m.

We need to calculate the acceleration of each block

Using equation of motion

$s=ut+\dfrac{1}{2}at^2$

Put the value into the formula

$1.0=0+\dfrac{1}{2}\times a\times(0.90)^2$

$a=\dfrac{2\times1.0}{(0.90)^2}$

$a=2.46\ m/s^2$

We need to calculate the mass of the other block

Using newton's second law

The net force of the block M

$Ma=Mg-T$

$T=Mg-Ma$ ....(I)

The net force of the block m

$ma=T-mg$

Put the value of T from equation (I)

$ma=Mg-Ma-mg$

$m(a+g)=M(g-a)$

$m=\dfrac{M(g-a)}{(a+g)}$

Put the value into the formula

$m=\dfrac{100(9.8-2.46)}{2.46+9.8}$

$m=59.8\ \approx60\ kg$

Hence, The mass of the another block is 60 kg.

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3 years ago

Blank is how high or low you think a sound is

vfiekz [6]

<span>The word is "pitch", which is exactly that: How "high" or "low" a sound is.</span>

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4 years ago

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A car with a momentum (impulse) of 20,000 kg m/s collides with a wall and comes to a rest in 0.1 seconds. How much

Pani-rosa [81]

Answer:

» Force is 200,000 Newtons

Explanation:

${ \tt{force = \frac{impulse}{time} }} \\ \\ { \tt{force = \frac{20000}{0.1} }} \\ \\ { \tt{force = 200000 \: newtons}}$

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3 years ago

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If the mass of a materials is 44grams and the volume of the material is 11cm^3 what would the density of the material be

jok3333 [9.3K]

Density =mass/volume
density= (0.044kg/(11 x10^-6)
4000kg/m^3

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3 years ago