1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
serg [7]
3 years ago
12

E

Physics
2 answers:
Digiron [165]3 years ago
5 0

The speed given at any instant of time is called as the instantaneous speed.

Answer: Option D

<u>Explanation:</u>

The formula for the instantaneous speed takes up the nth time in consideration rather than taking up the total time. along with the instantaneous speed, same concept applies on instantaneous velocity and instantaneous acceleration.

The instantaneous speed depicts the speed at the given time. The motion which is being observed in a particular second or minute or hour is the instantaneous. For example, the nth second, gives the particular velocity or speed or acceleration.

viva [34]3 years ago
4 0

Answer:

pretty sure it is given speed 90% sure please tell me if i am wrong

Explanation:

You might be interested in
Help with 3 and check the other ones please :(
devlian [24]
I don’t know what your talking about. ?!?!?!?
7 0
3 years ago
Read 2 more answers
The fast server in women's tennis is Venus Williams, who recorded a serve of 130 mi/h (209 km/h) in 2007 If her racket pushed on
Darina [25.2K]
209 km/h = 58.0 m/s

2as = v² - u²
Assuming the ball started from rest,

a = (58)² / 2 x 0.11

a = 15,290 m/s²
7 0
3 years ago
Explain what the ionosphere is and how it interacts with some radio waves.
kumpel [21]

Answer:

Explained

Explanation:

  • Ionosphere is the outermost layer of the Earth's atmosphere,extending from 60 km to 1,000 km altitude.
  • It mainly consists of ionized gases by the solar radiation.
  • It is very important layer to Earth because it influences the radio propagation to distant places on Earth.
  • Being ionized it reflects high frequency(shortwave) radio waves to the sky as well as to the Earth by a technique called "skip" or "skywave" propagation for the communication over long distances.
7 0
3 years ago
A chemical reaction takes place in which energy is absorbed. Arrange the characteristics of the reaction in order from start to
myrzilka [38]

Let’s create a diagram that shows the chemical reaction absorb energy. Take a look at the diagram I created that is attached to this answer.


Now, the start of the graph line is pretty flat and low leveled. This is the start, which is the reactants. The beginning of a chemical reaction that absorbs energy will almost always start with reactants. I labeled this this “Start: Reactants” and colored the text light green so you can easily detect the part I’m talking about.


Moving on, we see there’s a light blue arrow pointing from the the near bottom to the top curve of the graph line. This is the where the activation energy is rising. Activation energy is the difference between the reactants and products. When the graph line begins to cure, this is when the transition state is beginning. I labeled the transition state, “Transition State” and colored the text a light orange. I colored the line a light blue and also labeled it “Activation Energy” and colored the text light blue as well. I hope it’s easy enough for you to follow along. :)


Next we see that the graph line dips and then goes flat, but it doesn’t go low leveled. It says fairly higher than where it started. This is the end product. I labeled this “End: Product” and colored the text light purple so you can easily detect it.


Okay, now that that’s clear, let’s go ahead and fill in the first blank. According to the diagram we see that the start should be a reactant, and since the graph line starts out pretty low. So, this means that the first tile should be “Low energy of reactants."


Now the second tile should definitely be “Transition State.” This is because the second part in the diagram is transition state. Again, this is mainly where the activation energy is starting to rise.


As for the last and final tile, we should chose “High energy of products.” This is because the diagram is left off on a high leveled part at the end of the graph line.


So, when you place the tiles they should look something like this.


Low energy of reactants

↓

Transition state

↓

High energy of products



- Marlon Nunez

8 0
4 years ago
Read 2 more answers
A plant uses energy from the Sun to make food. What kind of energy transformation is this?
Katarina [22]
Light to chemical (C)
4 0
4 years ago
Read 2 more answers
Other questions:
  • If the particles are oxygen ions carrying a charge of −2e and the magnetic field magnitude is 0.12 T , how long does it take eac
    6·1 answer
  • C is wrong ( currently failing ) Please Help
    6·2 answers
  • Select all the answers that apply. Scientists think past changes in climate have been caused by _____.
    14·1 answer
  • Which of the following changes will increase the frequency of the lowest frequency standing sound wave on a stretching string?Ch
    12·1 answer
  • If it had been thrown with twice the speed in the same direction, it would have hit the ground in If it had been thrown with twi
    5·1 answer
  • What force is needed to accelerate an object 5 m/s if the object has a mass of 10kg?
    5·1 answer
  • The electric field everywhere on the surface of a thin, spherical shell of radius 0.750 m is of magnitude 890 N/C and points rad
    5·1 answer
  • Which symbol represents a type of radiation that has the same mass as an
    7·2 answers
  • A hammer strikes one end of a thick iron rail of length 8.80 m. A microphone located at the opposite end of the rail detects two
    10·1 answer
  • A description of a phenomenon
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!