Question 20 of 20
Which statement accurately describes how the velocity of an object in free
fall changes?
A. The distance it travels each second increases at a constant rate.
B. The distance it travels each second decreases at a constant rate.
• C. The distance it travels each second is constant. iS
• D. The distance it travels each second varies irregularly.
SUBMIT

Answers

Answer 1

Answer:

a

Explanation:

hI I


Related Questions

What is the distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º

Answers

The condition for maximum intensity is the same as that for a double slit. However, angular separation of the maxima is generally much greater because the slit spacing is so small for a diffraction grating. For a diffraction grating with lines/mm = lines/inch, the slit separation is d = micrometers = x10^ m.

The distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º will be 0.0000034 m.

What is diffraction grating?

A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.

The distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º is;

The equation of diffraction grating is given as;

[tex]\rm d sin \theta = n \lambda \\\\ dsin60=2 \times 760 \times 10^{-9} \\\\ d=0.00000304 \ m[/tex]

Hence,he distance between lines on a diffraction grating that produces a second-order maximum for 760-nm red light at an angle of 60.0º will be 0.0000034 m.

To learn more about diffraction grating refer to the link;

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If a small appliance is rated at a current of 18 amps and a voltage of 120 volts, what is the
power rating of the appliance?

Answers

2160 watts


thank you

Hope this helped

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Rilee Cartner

which of the following is not a latent heat gain source

Answers

The pathway for you to be able is in your room you need

If the resistance through the fat is 3 times that through the muscle, how much of the total current goes through the fat in terms of the current through the muscle?

A) 3 times the current through the muscle.
B) The same current as through the muscle.
C) No current passes through the fat.
D) 1/3 times the current through the muscle.

Answers

Answer:

it A i think

hope that helps if not i can change it

Explanation:

Answers for these 2 please

Answers

i think the answer for question 1 is 4.
Question 1 is acceleration = 1 m/s^2

Answer ASAP and only if you know its correct
this is science btw also, brainliest to the correct answer

Answers

The Doppler effect shows stars with red shifted light.

Answer:

the doppler effect shows stars with red shifted light

Explanation:

light from a receding star is shifted toward red or redshifted

redshift is an example of the doppler effect

the wavelength of the light is stretched so the light is seen as shifted towards the red part of the spectrum

What is the chemical formula for sulfur trioxide?

Answers

Answer:

Sulfur trioxide is a colourless compound that exists at room temperature either as a volatile liquid or in any of three allotropic solid forms. What is SO2 and SO3? SO2 is sulfur dioxide which is a gaseous compound formed from sulfur and oxygen atoms. The melting point and the boiling point are -71℃ and -10℃respectively.

Explanation:

The frequency of a wave does not change as it passes from one medium to another.
What will most likely happen if a light wave moves from the air into a solid?
The wavelength of the light wave will increase.
The speed of the light wave will decrease.
The wavelength of the light wave will remain the same.
The speed of the light wave will remain the same.

Answers

Answer:

The Speed Of The Lightwave Will Be Modified As It Enters Another Medium (State Of Matter)

Explanation:

As The Lightwave Enters The Medium The Light Will Bend Toward The Normal E.g. Incident Ray Which Indicates It Will Modify It's Speed But When it Leaves The Medium It Will Increase Until As It Leaves The Sold

Answer:

B

Explanation:

its B on Edge

A person driving in a neighborhood traveling 9 m/s slows to a stop (0 m/s) over 4
seconds as they approach a stop sign. What is the rate of acceleration of the car coming
to a stop in m/s²?
(Please help urgently if you can, thanks :D)

Answers

Answer:

-2.25 metres per second squared

A projectile is fired from the ground with an initial velocity of 250 m/s at an angle 60 degrees above the horizon. Calculate the horizontal and vertical components of the velocity.

Answers

The vertical and the horizontal component of the velocity are 216.51 m/s and 125 m/s respectively.

What is velocity ?

Velocity is the rate of change of displacement.

To calculate the horizontal component of the projectile we use the formula below.

Formula:

Vx = Vcos∅........... Equation 1

Where:

Vx = Horizontal velocity of the projectileV = Velocity of the projectile∅ = Angle of the projectile

From the question,

Given:

V = 250 m/s∅ = 60°

Substitute these values into equation 1

Vx = 250(cos60°)Vx = 125 m/s

Similarly, to calculate the vertical velocity, we use the formula below

Vy = Vsin∅................. Equation 2

Where:

Vy = Vertical component of the velocity.

Also Substitute the values into equation 2

Vy = 250(sin60°)Vy = 216.51 m/s

Hence, the vertical and the horizontal component of the velocity are 216.51 m/s and 125 m/s respectively.

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Each degree on the Kelvin scale equals how many degrees on the Celius scale

Answers

Answer:

0° C = 273.15 K

0 K = - 273.15° C

Explanation:

Hello there!

The Kelvin temperature scale refers to the absolute temperature scale. The division in the Kelvin scale is equal to a degree on the Celsius scale only it's difference is zero

The Celsius scale of zero (0°C) is the freezing point.

0 K is Absolute Zero.

° 0 K = - 273.15° C

0° C = 273.15 K

Furthermore, this is what I would like you to know about this scales;

The Kelvin scale is used for very low or very high temperatures where water is not involved.

Note:

The boiling point of water is 100°C.

I hope this helps you to understand more on this scales. Have a nice studies.

A truck travelling at 22.5 m/s decelerates at 2.27 m/s2. (a) How much time does it take for the truck to stop? (b) How far does it travel while stopping? (c) How far does it travel during the third second after the brakes are applied?​

Answers

We can use the "suvat" method

s is displacement

u is initial velocity

v is final velocity

a is acceleration

t is time

We substitute in what we know...

s = ?

u = 22.5 (the speed/velocity the trucks is initially)

v = 0 (the truck comes to a stop)

a = -2.27 (negative because it is decelerating

t = ?

[tex]\text{suvat formulae}:\\v = u + at\\s = ut + \frac{1}{2}at^2\\v^2 = u^2 + 2as\\s = \frac{v+u}{2}t\\s = vt - \frac{1}{2}at^2[/tex]

We have [tex]u[/tex], [tex]v[/tex], [tex]a[/tex] and we want to find the time for how long it takes the truck to stop.

We can use [tex]v = u + at[/tex]

[tex]v = u + at\\0 = 22.5 - 2.27 \times t\\\frac{-22.5}{-2.27} = t\\t = 9.91...\ \text{s}[/tex]

To find the distance (displacement), we can use [tex]s = ut + \frac{1}{2}at^2[/tex]

[tex]s = ut + \frac{1}{2}at^2\\s = 22.5 + \frac{1}{2} \times -2.27 \times 9.91^2\\s = -88.9661935\ \ \text{(we make it positive since you can't have negative distance)}\\s = 88.97...\ \text{m}[/tex]

To find the distance travelled 3 seconds after breaks are applied;

We just use the same formula, but with [tex]t = 3[/tex]

[tex]s = ut + \frac{1}{2}at^2\\s = 22.5 \times 3 + \frac{1}{2} \times -2.27 \times 3^2\\s = 12.285\ \text{m}[/tex]

The distance between a Point on one wave and the same point on the next cycle of the wave

Answers

Answer:

wavelength

Explanation:

the definition of wavelength is the distance between two consecutive waves. with that being said, the point from the crest of one wave to the crest of another would be wave length

A force of 600N is applied to an object that accelerates at a rate of 15m/s/s. What is the mass of the object?

Answers

Answer:

The answer will be it has a mass of 40 kg.

Explanation:

Because Force = mass x acceleration or F = m a, we can say Force divided by mass or F/a = m or mass so 600 divided by 15 equals 40 kg.

Martin perceived that there was music playing. Martin
A
did not believe there was music.

B
was very surprised by the music.

C
let everyone know about the music.

D
became aware of the music.

Answers

B was very surprised by the music

Can someone please help me!

Answers

Answer: I've solved the above questions and attached pictures too which show the working for better understanding of the questions.

hope that helps...

Will the positioning of your Slinky along the east-west, north-south, or some other orientation affect your readings? Why?

Answers

Positioning your Slinky along any direction different from its initial position will affect your reading, because there will be change in the magnetic field.

Effect of magnet on Slinky

If the Slinky is made of an iron alloy, it can be magnetized by itself. Moving the Slinky around can cause a change in the magnetic field, even if no current is flowing.

When there is a change in the magnetic field, the reading changes.

At any point, you change the orientation of the Slinky, you will need to zero the reading or adjust the Slinky back to its initial position, even if the sensor does not move.

Thus, Positioning your Slinky along any direction that is different to its initial position will affect your reading because there will be change in the magnetic field.

Learn more about magnetic field here: https://brainly.com/question/7802337

A force of 20 N is exerted by an electric field on a test charge of 8.0 x 10² C at a point, P. What is the electric field strength
at point P?
0.004 N/C
Ob
1.6 N/C
Oc
160 N/C
Od
250 N/C

Answers

Answer:

the answer is equal to 1.6N/C

This Subject is Actually Science So Am Stuck On This Question
Q: Objects in orbit appear to be weightless because
Options:
a. they are weightless
b. they are in free fall
c. their mass becomes zero
d. the applied gravity force becomes zero

Answers

Answer:

b. they are in free fall

Explanation:

-

A big pendulum goes back and forth
once every 18.9 s. What is the
length of the pendulum?
(Unit = m)

Answers

T = 2π√(L/g)

For earth , g ~ 10

18.9 = 2×3.14 √(L/g)

9 = L/g

L = 90 metres

Answer:

88m

Explanation:

T=2π*[tex]\sqrt{L/g}[/tex]-->Τ/2π=[tex]\sqrt{L/g}[/tex]-->18.9/2π=[tex]\sqrt{L/g}[/tex]-->3=[tex]\sqrt{L/g}[/tex]-->3^2=L/g-->9=L/9.8

so L=9*9.8-->L≈88m

If you wanted the car to roll a long way , would you choose carpet or wood

Answers

You would choose wood, because carpet causes more friction, slowing the car sooner.

"The greater the height of an object, the *BLANK* its gravitational potential energy."

please help thank u!

Answers

Answer:

the greater the height of an object the *greater* its gravitational potential energy

greater

The answer is greater

to which end of the horseshoe magnet will the north end of the magnet be attracted

Answers

Answer:

The north end of the  magnet will be attracted to the south end of the horseshoe magnet.

Likewise, the north end of the magnet will be attracted to the earth's north pole - so the north pole of the earth is actually a south magnetic pole.

if lens behave like prism and disperse light then why person using glass on eye can't see colour being dispersed?​

Answers

Answer:

A prism can disperse light into different colors when the light enters the prism at a "fixed" angle - light coming in, perhaps, thru a narrow slit

If light can enter at all angles, then dispersion occurs at all angles and no dispersion can be seen

what is a literature review?

Answers

Answer: A literature review consists of an overview, a summary, and an evaluation (“critique”) of the current state of knowledge about a specific area of research.

Explanation:

How does paragraph 3 help develop the ideas in this passage

Answers

Answer:

celebrating different points.

Explanation:

adds more information to what your talking about

It helps add more information to what you are talking about

If I want to calculate the normal force of an object on two legs but the weight of the object is not uniform throughout, how do I go about calculating such a problem?

Answers

Use the right equation. To calculate the normal force of an object at an angle, you need to use the formula: N = m * g * cos (x) For this equation, N refers to the normal force, m refers to the object's mass, g refers to the acceleration of gravity, and x refers to the angle of incline.

Why wave energy is different from other types of energy? Describe in your own words

Answers

Answer:

it is the most concentrated form of renewable energy on earth, with power density much higher than that of wind and solar energy.

Explanation:

The advantages of wave energy include being free, sustainable, renewable, and producing zero waste. Therefore, it can contribute to reducing our carbon footprint. It is also unique since it is the most concentrated form of renewable energy on earth, with power density much higher than that of wind and solar energy.

A tortoise challenges a hare to a four-hour race. The hare is so confident of winning that he allows the tortoise to start with a 10-km lead. The hare runs at a speed of 14 km per hour, but stops for a two-hour nap in the middle of the race. The tortoise plods along at 4 km per hour the whole race. Who gets farther in four hours?

Answers

Answer: The tortoise made it.
Explanation: Because in the first place the challenge was to run a four hour race. So the focal point was to make it in 4 hrs, we see the tortoise continuously running in the race for four hours in which he covers a distance of 4km per hour which when we multiply the 4hrs with 4km distance he covered, we will discover that he covered a distance of 16km in 4hrs, so for him its mission accomplished. On the other hand the hare only covered a distance of 14km which he covered in an hour, but that wasn't the challenge, the challenge was to run for 4hours. So not only did the tortoise cover a longer distance, but he also achieved the four hour challenge.

Breifly describe how traits are passed down from human parents to their offspring. In your description, be sure to include the terms gene, chromosome, and meiosis.

Answers

Answer:

Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes

Explanation:

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