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3 years ago

What 2 things define the state of matter?

Physics

2 answers:

Colt1911 [192]3 years ago

6 0

Answer:

mass and volume

Explanation:

matter is anything that has mass and occupies space(volume)

kati45 [8]3 years ago

6 0

Answer:

Four states of matter are observable in everyday life: solid, liquid, gas, and sometimes plasma.

Shape is a characteristic property of matter.

The amount of matter in an object doesn't really affect the characteristic properties of the object

Explanation:

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A cylinder of mass mm is free to slide in a vertical tube. The kinetic friction force between the cylinder and the walls of the

Zinaida [17]

Answer:

$y = \frac{-f +/- \sqrt{f^{2} +2kmg}}{k}$

Explanation:

Let y₀ be the initial position of the cylinder when the spring is attached and y its position when it is momentarily at rest.From work-kinetic energy principles, The work done by the spring force + work done by friction + work done by gravity = kinetic energy change of the cylinder

work done by the spring force = ¹/₂k(y₀² - y²)

work done by friction = - f(y - y₀)

work done by gravity = mg(y - y₀)

kinetic energy change of the cylinder = ¹/₂m(v₁² - v₀²)

So ¹/₂k(y₀² - y²) - f(y - y₀) + mg(y - y₀) = ¹/₂m(v₁² - v₀²)

Since the cylinder starts at rest, v₀ = 0. Also, when it is momentarily at rest, v₁ = 0

¹/₂k(y₀² - y²) - f(y - y₀) + mg(y - y₀) = ¹/₂m(0² - 0²)

¹/₂k(y₀² - y²) - f(y - y₀) + mg(y - y₀) = 0

¹/₂ky₀² + fy₀ - mgy₀ -¹/₂ky² - fy + mgy = 0

¹/₂ky₀² + fy₀ - mgy₀ = ¹/₂ky² + fy - mgy

Let y₀ = 0, then the left hand side of the equation equals zero. So,

0 = ¹/₂ky² + fy - mgy

¹/₂ky² + fy - mgy = 0

Using the quadratic formula

$y = \frac{-f +/- \sqrt{f^{2} - 4 X\frac{k}{2} X -mg}}{2 X \frac{k}{2} }\\ y = \frac{-f +/- \sqrt{f^{2} +2kmg}}{k}$

4 0

3 years ago

A motion sensor acts as a transmitter when it sends out pulses and as a receiver when it listens for echoes. The delay ∆t betwee

Oksi-84 [34.3K]

Answer:

1.526 m

Explanation:

The motion sensor sends sound waves in air which travels at a speed of 343 m per second at 20 degree. If d be the distance of the reflecting object

total distance travelled = 2d

Time taken t = 8.9 x 10⁻³ s

velocity v = 2d / t

343 = 2 d / (8.9 x 10⁻³)

d = 1.526 m

4 0

3 years ago

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much

vlada-n [284]

<span>W=98*1.49/9.8 N
</span>soo <span>14.9 Newtons</span>

5 0

4 years ago

Read 2 more answers

. A whale swims due east for a distance of 6.9 km, turns around and goes due west for 1.8 km, and finally turns around again and

lara31 [8.8K]

Answer:

a) 12.4 km

b) 8.8 km

Explanation:

a) Distance is the total space covered by an object in its entire journey.

So, distance = 6.9+1.8+3.7 = 12.4 km

Distance travelled by the whale is 12.4 km

b) Displacement is the minimum distance between the final and initial point of the journey.

Let us take direction towards East as positive and direction towards west positive.

So, Displacement is given by

6.9-1.8+3.7 = 8.8 km

The displacement of the whale is 8.8 km

4 0

3 years ago

an object ends up at a final position of x=-55.25 meters after a displacement of -189.34 meters after a displacement of -189.34

Rzqust [24]

-244.59meters

Explanation:

The initial position of the object is located at -244.59meters from the origin.

Displacement is the distance from the start to finish of a body.

Final position of the body is at x=-55.25 meters

Amount of displacement is -189.34meters;

let us represent this by a coordinate system in the negative x - direction;

Origin

Start finish 0m

-a -x

-55.25meters

displacement

-189.34meters

Position -a is about 189.34 in left direction from 55.25; this gives: 55.25 + 189.34 = -244.59m in the left direction

learn more:

Displacement brainly.com/question/5461768

#learnwithBrainly

6 0

3 years ago