A soda bottle is flexible enough that the volume of the bottle can change even without opening it. If you have an empty soda bottle (volume of 2.0 L) at room temperature (25 0C), what will the new volume be if you put it in your freezer (-4.0 0C)?

Answers

Answer 1

Answer:

Answer: 1.81 L

Explanation:

Let us assume that we are dealing with an ideal or perfect gas. Thus we can use the formula from Charles' law that relates the volume with respect to the temperature of a gas.

Given:

Initial volume (V1) = 2L

Initial temperature (T1) = 25°C = 273 + 25 = 298 K

Final temperature (T2) = -4°C = 273 - 4 = 269 K

Final Volume (V2) = ?

Using Charles' law like we stated above, we have

(V1) / (T1) = (V2) / (T2), making V2 the subject of formula, we have

V2 = (V1 × T2) / T1

V2 = (2L × 269 K) / (298 K)

V2 = 538 L.K / 298 K

V2 = 1.81 L

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The longest wavelength within the visible spectrum is _______ light. A. blue
B. orange
C. red
D. violet

Answers

The longest wavelength within the visible spectrum is the redlight. The answer is letter C. It is called visible light because it is theonly light that can be seen by the human eye. Red light is the longestwavelength around 620 to 750 nanometer. It is followed by orange which has awavelength of 590 t 620 nanometer. And then blue which has a wavelength of 450to 495 nanometer. And the shortest wavelength is violet which has a wavelengthof 380 to 459 nanometer.

The longest wavelength within the visible spectrum is red light. The correct option is C.

The visible spectrum of light consists of different colors ranging from red to violet. Each color corresponds to a different wavelength. Among the given options, red light has the longest wavelength within the visible spectrum.

A. blue: Blue light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum.

B. orange: Orange light has a shorter wavelength compared to red light. It falls between red and yellow on the visible spectrum.

C. red: Red light has the longest wavelength among the visible colors. It is located on the longer end of the visible spectrum.

D. violet: Violet light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum, just after blue.

Therefore, the correct option is C. red as it has the longest wavelength within the visible spectrum.

To learn more about the visible spectrum click:

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A worker pulls horizontally on a crate across a rough horizontal surface, causing it to move forward with constant velocity. Force A is the force exerted by the worker and force B is the force of friction due to the surface. What is the relationship between A and B?A > B
A = B
A< B
It will not slow down, but continue moving at constant velocity.

Answers

Answer:

$A = B$

Explanation:

A work pulls the crate by horizontal force on it

Now due to this applied force crate is moving horizontally with uniform speed

so we can say that the acceleration of the crate will be zero

now by Newton's II law we can say

$F_(net) = 0$

$F - F_f = 0$

so here we will have

$F_f = F$

here we know that applied force is A

so F = A

and friction force is B

$F_f = B$

so correct relation is

$A = B$

If an object is moving at a constant velocity ( That means a constant speed in a straight line. ) the net force acting on the object is zero, nothing. Why? It's motion is described by Newton's first law: An object at rest will remain at rest and an object in motion will remain in motion moving at constant velocity unless acted by an outside force.

How do wind turbines pollute their environment?

Answers

Although the wind turbines do not pollute the environment directly, it is still able to pollute the environment indirectly. The maintenance, construction, and the assembly of the wind turbines would make use of equipment or machines that would emit some harmful substances. For example, the delivery of the materials, the turbine parts, and the other equipment would entail a lot of back and forth trips. The deliverer, from his vehicle, would sometimes emit smoke or gas from his vehicle that is dangerous to health.

Wind turbines in fact to pollute the environment. They pollute the environment because when they are being built or manufactured, pollution is produced. Wind power does produce pollution. It also takes up space in land. In farms they take up a lot of space so then we cannot grow crops and animals cannot live there. One turbine can give electricity to about 400 homes. Imagine how many you will need to power a whole country! The turbines are also very loud. It can damage peoples ears when they are near one.

Earth is the only planet known to have _____.an atmosphere
a lithosphere
a biosphere
a cryosphere

Answers

the answer is bioshere

Answer:

A biosphere

Explanation:

Biosphere refers to the zone of life on a planet. It includes all living elements of a planet. It is also known as Eco-sphere and includes the interaction of all living being with their surrounding.

Of all the planets and exo-planets, Earth is the planet known to have life and thus biosphere.

Whereas atmosphere, lithosphere and cryosphere can be found on other planets as well.

Atmosphere: Layer of air and gases surrounding a planet or any celestial object. (Except Mercury, all the planets of solar system have atmosphere)

Lithosphere: it refers to the rigid outer part of the planet which includes crust and mantle. (All the rocky planets have lithosphere)

Cryosphere: portion of the planets where water is in ice form. (Many exoplanets have been discovered having cryosphere)

A car of mass 1500 kg is travelling at a speed of 20m/s. Calculate its kinetic energy

Answers

Given,

Mass, m=1500kg

Velocity, v=20m/s

KE= 1/2mv^2

KE=1/2 x 1,500 x 20^2

KE=300000 J

KE=300 kJ

A coin is placed 32 cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When the speed of the coin is 110 cm/s (rotating at a constant rate), the coin just begins to slip. The acceleration of gravity is 980 cm/s^2 . What is the coefficient of static friction between the coin and the turntable?