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
choli [55]
2 years ago
15

You really have a thing for screaming outside. So on a day where the speed of sound is 343 m/s you go outside and scream at a wa

ll. It takes 0.5 s for you to hear your echo. How far away is the wall that you screamed at?
Physics
1 answer:
OlgaM077 [116]2 years ago
8 0
Speed = Distance/Time
Distance = Speed x Time
343 x 0.5 = 1/2 of 343
343 x 0.5 = 171.5
You might be interested in
What will happen in the next moment for the girl on the swing?
guajiro [1.7K]

Answer:

Increase, same, same

Explanation:

8 0
3 years ago
Which statement describes the relationship between energy and entropy in the universe?
rusak2 [61]

In fact, entropy of an isolated system never decreases (2nd law of thermodynamics), unless some external energy is provided in order to "restore" order in the system and decrease its entropy.

(note that when external energy is added to the system, it is no longer "isolated").


*This is only true if the question is referring to a certain system within the universe. If we are considering the universe itself as the system, then this option is no longer correct, because no external energy can be provided to the universe, and since the universe is an isolated system, its entropy can never decrease. If we are considering the universe itself as the system, none of the options is true.




8 0
3 years ago
Read 2 more answers
The direction of deflection of an electron beam in a magnetic field can be determined by which of the following?
amid [387]

Answer:

Right Hand Rule

Explanation:

When a charged particle travels in a magnetic field, it experiences a force whose magnitude is given by:

F=qvBsin\theta

where

q is the charge of the particle

v is the velocity

B is the magnetic field strength

\theta is the angle between the directions of v and B

The direction of the force can be determined by using the Right Hand Rule, as follows:

- index finger: this should be put in the direction of the velocity

- middle finger: this should be put in the direction of the magnetic field

- thumb: this will give the direction of the force -> however, for a negative charge (as the electron) the direction must be reversed, so it will be opposite.

4 0
3 years ago
You must give a signal either by hand and arm or by a signal device: Only if other traffic is affected by your movement Only at
Vesnalui [34]
Hello there!

Anytime you change lanes.


Hope this helps :)
5 0
3 years ago
Acceleration refers to any changes in
Reptile [31]

Answer:

speed

Explanation:

6 0
2 years ago
Other questions:
  • The motion of an object parallel to the earth's surface is
    12·1 answer
  • A skier with a 65kg mass skies down a 30 degree incline hill. The coefficient of friction is 0.1. a. Draw a free body diagram. b
    11·1 answer
  • Beth, a construction worker, attempts to pull a stake out of the ground by pulling on a rope that is attached to the stake. The
    13·1 answer
  • 5. Sandor fills a bucket with water and whirls it in a vertical circle to demonstrate that the
    6·1 answer
  • Suppose that a freely falling object were somehow equipped with an odometer. Would the readings of distance fallen each second i
    15·1 answer
  • A car accelerates from rest at a constant rate of 8m/s^2. How fast is it going after 10s? How far has it gone after 10s? What is
    8·1 answer
  • Which phrase is the best definition of energy
    12·1 answer
  • Me podrían dar la respuesta y el proceso?
    8·1 answer
  • Which of the following best describes electromagnetic waves?
    13·1 answer
  • At what speed should a ball of mass 2 kg be rolled in order to reach the other side of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!