What does EMR tell us about wavelength, amplitude, and frequency?

Answer:

chemical changes

burning wood

rotting banana

fireworks

physical changes

shredding paper

melting ice

chopping wood

Explanation:

Answer:

190 km/h

Explanation:

randomly picked it

Answer: the answer is A

Explanation:

Answer:

The answer is 46.0089 N of weight

Explanation:

The answer is in the question

F=mg

reverse the question, mg=F

Plug in the values of mass (4.69) and gravity (9.81)

4.69(9.81)=F

F = 46.0089 (or D)

Answer:

I would say b.rainforest

Answer:

Oceanic crust is about 6 km (4 miles) thick. It is composed of several layers, not including the overlying sediment. The topmost layer, about 500 metres (1,650 feet) thick, includes lavas made of basalt (that is, rock material consisting largely of plagioclase [feldspar] and pyroxene).

Explanation:

it was on google hope  this helps

Answer:

the answer is true true

Answer:

air friction

Explanation:

this helps with take of and landing.

speed = distance/time

Answer:

velocity= distance divided by time

Answer: B. Only the mass of the planet

Explanation:

the confusion on the concepts of mass and weight arises from the fact that the acceleration due to gravity is more or less constant in any place on the Earth's surface, thus the weight of an object is directly proportional to its mass. hope it helps <3

Answer:

4511millimetres

Explanation:

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Answer:

The right response will be "450 volts".

Explanation:

The given values are:

R1 = 4.00 cm

R2 = 6.00 cm

q1 = +6.00 nC

q2 = −9.00 nC

As we know,

The potential difference between the two shell's difference will be:

⇒  [tex]\Delta V=K[(\frac{q1}{R1}+\frac{q2}{R2})-(\frac{q1}{R1} +(\frac{q2}{R2}))][/tex]

           [tex]=K[\frac{q1}{R2}-\frac{q1}{R1} ][/tex]

On substituting the values, we get

           [tex]=(9\times 10^9)[\frac{6\times 10^{-9}}{0.04}-\frac{6\times 10^{-9}}{0.06}][/tex]  

       Δ [tex]=450 \ volts[/tex]

Answer:

Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. The concept is key to charting the universe's expansion.

Visible light is a spectrum of colors, which is clear to anyone who has looked at a rainbow. When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer. If an object moves closer, the light moves to the blue end of the spectrum, as its wavelengths get shorter hope this helps.

Explanation:

Answer:

Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.

Explanation:

Answer:

woolen clothes in winter because woolen clothes gives us warmth. ... We should wear light colored clothes in summer because light coloured clothes keeps us cool as they insulate the heat. And cotton clothes makes us comfortable in summers and cotton clothes absorb the sweat which we get mostly in summers

Explanation:

Answer:

Density=mass/volume 40 divided by 8 =5

Answer:

A. They can provide an accurate picture of someone’s personality.

C. They can be used to target employee training.

E. They may lead to lower turnover rates.

Explanation:

A. They can provide an accurate picture of someone’s personality and C. They can be used to target employee training, E. They may lead to lower turnover rates.

The phrase "assessment" refers to the broad range of techniques or instruments that educators employ to assess, gauge, and record pupils' academic preparedness, learning progress, skill development, or educational requirements.

Education professionals use a wide range of assessment tools and methods to gauge everything from a four-year-readiness old's for kindergarten to a twelfth-grade student's comprehension of advanced physics.

Despite the fact that assessments are frequently mistaken for traditional tests, particularly the standardized tests created by testing companies and given to large populations of students, educators use a variety of assessment tools and methods.

Therefore, A. They can provide an accurate picture of someone’s personality and C. They can be used to target employee training, E. They may lead to lower turnover rates.

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Answer:

The horizontal velocity is constant at 16 m/s.

After 1 sec since v = a t then 9.8 m/s^2 * 1 sec = 9.8 m/s for the vertical velocity

V = (Vx^2 + Vy^2)^1/2 = (16^2 + 9.8^2)^1/2 = 18.8 m/s

Answer:

20 kg = 20000 grams. What is 20 kilograms in pounds? 20 kg = 44.09245 pounds.Explanation:

:)

Answer:

W = mg

W = 20kg x 9.8m/s^2

W = 196 N

Answer:

Acceleration at 1 second= 1.5m/s/s

Velocity at 2 seconds = 3m/s

Position at 2 seconds= 3 meters

Explanation:

s=1/2(v+u)t

S= displacement

V= final velocity

U=  initial velocity

t= time

v= 3 m/s

u= 0 m/s

t= 2 seconds     3m/s/2=1.5m/s x2 s = 3 meters

Answer:

Explanation:

Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.

Answer:

the charge that is given by the object is positive charge and the object which is taking the charge is negetively charged

Explanation:

Answer:

fa___gyyioo

Explanation:

Answer: The correct answers are

Fahrenheit

Celsius

Kelvin

Explanation:

Answer:527 m

Explanation:

The displacement or distance travelled by the airplane during the given period is 526.5m

Given the data in the question;

constant acceleration; [tex]a = 3.0m/s[/tex]

Initial velocity; [tex]u = 21m/s[/tex]

Final velocity; [tex]v = 60m/s[/tex]

Displacement or distance; [tex]s = ?[/tex]

To find the displacement or distance the plane has travelled during the given period, we use the Third Equation of Motion:

[tex]v^2 = u^2 + 2as[/tex]

Where v is the final velocity, u is the initial velocity, a is the acceleration and s is the displacement.

Lets make "s" the subject of the formula

[tex]s = \frac{v^2-u^2}{2a}[/tex]

We substitute our given values into the equation

[tex]s = \frac{(60m/s)^2 - (21m/s)^2}{2 \ *\ 3m/s^2} \\\\s = \frac{(3600m^2/s^2) - (441m^2/s^2)}{6m/s^2}\\\\s = \frac{3159m^2/s^2}{6m/s^2}\\\\s = 526.5m[/tex]

Therefore, The displacement or distance travelled by the airplane during the given period is 526.5m  

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Explanation:

According to Snell's law :

Sin i / Sin r = refractive index

[tex]r = sin^{ - 1} ( \frac{sin \: i}{1.33} ) = sin^{ - 1} (0.3)[/tex]

[tex]angle \: of \: refraction = 17.45°[/tex]

Therefore, angle of refraction is less than angle of incidence because the light ray bends towards the normal when it travels from rarer to denser medium

Mass of the Beaker = 12.023 g

Total Mass of the Beaker and the Ball = 23.050 g

The Mass of the Ball.

Total Mass of the Beaker and the Ball - Mass of the Beaker = Mass of the Ball

23.050 g - 12.023 g = 11.027 g

The Mass of the Ball is 11.027 g

Answer:

According to the kinetic theory, all matter is composed of _______.

Explanation:

The Kinetic Theory of Matter states that matter is composed of a large number of small particles, individual atoms or molecules, that are in constant motion. Matter is made up of particles that are constantly moving. All particles have energy, but the energy depending on the temperature of which matter is in.

According to the kinetic theory, all matter is composed of large number of identical small molecules.

A lot of the fundamental ideas of thermodynamics were established with the help of the kinetic theory of gases, a straightforward yet historically significant classical model of the thermodynamic behavior of gases.

According to the model, a gas is made up of numerous identical submicroscopic particles (atoms or molecules) that are all moving rapidly and randomly.

It is considered that they are substantially smaller in size than the particle spacing on average. Random elastic collisions between the particles and with the container's walls occur between the particles. The simplest form of the model only takes into account the interactions within the ideal gas.

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