All categories

4 years ago

In order to change the color of light, you must change___?

1 answer:

6 0

In order to change the colour of the light, you would need to change both the wavelength and frequency of light, as light in the visible spectrum, have their own unique wavelengths that they occur in along with the measure of frequency, which measures the number of cycles or turns a wave can occur from trough to trough or crest to crest within a given period of time.

You might be interested in

A sled whose total mass with cargo is 30.0 kg rests on ice. The coefficient of static friction is 0.20 and the coefficient of ki

romanna [79]

when sled just start to move the force on the sled will be equal to the static friction

So here we need to find the value of static friction

We know that

m = 30 kg

$\mu_s = 0.20$

now we know that normal force on the block is counterbalanced by weight of the block

$F_n = mg$

$F_n = 30*9.8$

now in order to find the friction force we can use

$F_s = \mu_s * F_n$

$F_s = 0.20 * 30 * 9.8$

$F_s = 59 N$

so it requires 59 N of force to move the sled

5 0

3 years ago

A small spaceship whose mass is 1300 kg (including an astronaut) is drifting in outer space with negligible gravitational forces

Alexxandr [17]

Answer:

Explanation:

Relation between energy and momentum is as follows .

E = h c / λ

E / c = h / λ

h /λ = momentum of a photon

momentum of a photon = E /c

= 11 x 10³ / 3 x 10⁸

= 3.67 x 10⁻⁵

In 4 days no of photon

= 4 x 24 x 60 x 60 = 345600 .

momentum of photon released

3.67 x 10⁻⁵ x 345600 .

= 12.68 kg m/s

This momentum will be imparted to spaceship .

12.68 = mv

12 .68 = 1300 x v

v = .00975 m /s

= 9.75 mm /s

8 0

3 years ago

In a lab, a 5 L sample of gas with a pressure of 6 atm was transferred to a one liter flask.

wolverine [178]

Answer:

30 atm

Explanation:

P1V1 = P2V2

P2 = P1V1/V2

P2 = (6 atm * 5 L) / 1L

P2= 30 atm

6 0

3 years ago

When a substance is poured from one container to another, its shape changes but its volume does not, what state of matter is the

lianna [129]

Answer: When a liquid substance is poured into a vessel, it takes the shape of the vessel, and, as long as the substance stays in the liquid state, it will remain inside the vessel. Furthermore, when a liquid is poured from one vessel to another, it retains its volume (as long as there is no vaporization or change in temperature) but not its shape.

Explanation: A solid has a definite shape and volume. A liquid has a definite volume, but takes the shape of its container. A gas lacks either a defined shape or volume. Plasma is similar to a gas in that its particles are very far apart, but a gas is electrically neutral and plasma has a charge.

8 0

3 years ago

Key Stage 3 Science - Physics

stira [4]

Answer:

F = 3750 N

Explanation:

Given that,

Pressure, P = 150 Pa

Area, a = 25m²

We need to find the force applied. We know that, pressure is equal to the force acting per unit area. It can be given by :

$P=\dfrac{F}{A}\\\\F=P\times A\\\\F=150\ Pa\times 25\ m^2\\\\F=3750\ N$

So, the required force is 3750 N.

5 0

3 years ago