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
Dafna11 [192]
3 years ago
9

Since sound travels faster in warm air, the speed of sound near the ground is increased, leading to a gradual reflection of soun

d waves.
True or False?
Physics
1 answer:
scoray [572]3 years ago
5 0
B. False. beause warm air rises up in the air so first of all there is no warm air near the ground and second of all higher the temperature higher will be the collision of molecules so sound will travel a bit slower than lower temperature
You might be interested in
When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conduct
Tamiku [17]

Answer:

When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conductor. Terminals should not be used for more than one

Explanation:

The Terminal block being a modular block, having insulated frame, which can secure more than two wires in it. It has a conducting strip in it. These terminal clocks helps in making the connection safer as well as organised. These terminal blocks are used for power distribution in safer way. Its potential is it can distribute power from single to multiple output. The conductor is used for making it proper contact.

8 0
3 years ago
Which of the following should be useful to show the percentage of total growth in plants exposed to various pollutants?
marishachu [46]
I think it is D. Bar graph
5 0
3 years ago
Read 2 more answers
when you place your feet near the fireplace and they become warm what type of energy conversion occurs
JulsSmile [24]
I think you forgot to give the options along with the question. I am answering the question based on my knowledge and research. "Radiant to thermal" is the type of energy conversion that occurs when <span>you place your feet near the fireplace and they become warm. I hope the answer has come to your great help.</span>
8 0
3 years ago
Read 2 more answers
Current can be made to flow in a stationary conductor by ............................
lara31 [8.8K]

Answer:

A is the answer. Im only 12 and i hope this explanation helps you.

Explanation:

Lenz's Law of Electromagnetic Induction. Faraday's Law tells us that inducing a voltage into a conductor can be done by either passing it through a magnetic field, or by moving the magnetic field past the conductor and that if this conductor is part of a closed circuit, an electric current will flow.

3 0
3 years ago
You are investigating an elevator accident which happened in a tall building. An elevator in this building is attached to a stro
Advocard [28]

Answer:

a) F = 2250 Ib

b) F = 550 Ib

c) new max force ( F newmax ) = 2850 Ib

Explanation:

A) The force the wall of the elevator shaft exert on the motor if the elevator starts from rest and goes up

max capacity  of elevator = 24000 Ibs

counterweight = 1000 Ibs

To calculate the force (F) :

we first calculate the Tension using this relationship

Counterweight (1000) - T =  ( 1000 / g ) ( g/4 )

Hence T = 750 Ib

next determine F

750 + F - 2400 = 2400 / 4

hence F = 2250 Ib

B ) calculate Tension first

T - 1000 = ( 1000/g ) ( g/4)

T = 1250 Ib

F = 2400 -1250 - 2400/ 4

F = 550 Ib

C ) determine design limit

Max = 2400 * 1.2 = 2880 Ib

750 + new force - 2880 = 2880 / 4

new max force ( F newmax ) = 2850 Ib

8 0
3 years ago
Other questions:
  • Investigators studied the effect of temperature on the rate of biological enzyme action. The experimental data is summarized in
    7·2 answers
  • The picture above shows a football player kicking a football. This is known as two dimensional motion. In which direction does t
    7·1 answer
  • What Energy transformations when climbing a hill?
    13·1 answer
  • Describe the general structure of an atom.
    5·2 answers
  • Why do boys like boys
    10·1 answer
  • In an uncomformity between two layers of rock, how is the lower layer usally described
    11·1 answer
  • An object is thrown with a horizontal velocity of 49mt/sec and a vertical velocity of 18.8 mt/sec. How long will the object take
    6·1 answer
  • 10 Points
    9·2 answers
  • PLEASE HELP! FOR BRAINLIEST!
    11·1 answer
  • HELP PLEASE...Arnold built a machine to help deliver the morning paper.He had to pull with 38N of force to move a stack of paper
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!