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
Alexandra [31]
3 years ago
5

I need help with question 2 and 2 please

Physics
1 answer:
vitfil [10]3 years ago
5 0
Alright here the answer to number 2

You might be interested in
What is the frequency of sound waves whose wavelength is 0.25 m on a day when the air temperature is 25 degree Celsius? Group of
Dvinal [7]

Answer:1384 Hz

Explanation:

Given

wavelength(\lambda )=0.25 m

Temperature T=25^{\circ}

at T=25^{\circ} velocity of sound is 346 m/s

and we know

velocity=frequency\times \lambda

v=f\times \lambda

346=f\times 0.25

f=1384 Hz

5 0
3 years ago
Read 2 more answers
Helppppppp its exam ​
UkoKoshka [18]

Answer:

a. 240.2 C

Explanation:

7 0
3 years ago
Coulomb's law states that the force F of attraction between two oppositely charged particles varies jointly as the magnitude of
Mars2501 [29]

Answer: Force F will be one-sixteenth of the new force when the charges are doubled and distance halved

Explanation:

Let the charges be q1 and q2 and the distance between the charges be 'd'

Mathematical representation of coulombs law will be;

F1=kq1q2/d²...(1)

Where k is the electrostatic constant.

If q1 and q2 is doubled and the distance halved, we will have;

F2 = k(2q1)(2q2)/(d/2)²

F2 = 4kq1q2/(d²/4)

F2 = 16kq1q2/d²...(2)

Dividing equation 1 by 2

F1/F2 = kq1q2/d² ÷ 16kq1q2/d²

F1/F2 = kq1q2/d² × d²/16kq1q2

F1/F2 = 1/16

F1 = 1/16F2

This shows that the force F will be one-sixteenth of the new force when the charges are doubled and distance halved

4 0
2 years ago
What selective pressures favored an increase in brain size in hominid primates?
Viktor [21]
The colossal brains of people are to a great extent because of one segment the cerebral cortex. The cerebral cortex is the focal point of dialect, rationale, critical thinking, and data preparing. A high bent in these territories would be exceptionally favorable to primitive seekers.
4 0
3 years ago
Read 2 more answers
If you have 5.112 grams of ammonia (NH3), then how many molecules of ammonia do you have?
Dominik [7]
I hope it helps! good luck in chem!

7 0
2 years ago
Other questions:
  • A spider of mass mm is swinging back and forth at the end of a strand of silk of length LL. During the spider's swing the strand
    12·1 answer
  • the force between a planet and a spacecraft is 1 million newtons. whst will the force be iv the spacecraft moves to halfg its or
    11·1 answer
  • CN you help me with this question?
    9·1 answer
  • Pink
    7·1 answer
  • The term “distance” refers to ?
    11·1 answer
  • First, you will investigate purely vertical motion. The kinematics equation for vertical motion (ignoring air resistance) is giv
    5·1 answer
  • The smallest unit of a compound is called a ___________.
    5·1 answer
  • Gerald works on a futuristic space station servicing interstellar space ships. He observes a ship traveling directly away from t
    10·1 answer
  • Why would the discovery of a fossil imply that earth is much older than originally though ?
    9·1 answer
  • 30 POINTS PLS HELP NO LINKS PLS :/
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!