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
swat32
3 years ago
9

The picture below shows an experiment to find out the highest frequencies which students can hear. When the teacher turns the di

al the frequency from the loudspeaker increases. the students put their hands down when they can no longer hear the sound.
Some students put their hands up while others have put their hands down. What conclusion can you draw from this observation?

The teacher suspects that some of the students are not giving honest responses, they are keeping their hands up even when they can no longer hear the sound. How could he check if he is right? *
Physics
1 answer:
Ede4ka [16]3 years ago
5 0
Wheres the picture? Theres no picture below
You might be interested in
How is thermal energy transferred during convection?
Lerok [7]
Conduction and <span>convection it involves particles.</span>
5 0
3 years ago
Read 2 more answers
When atoms are split, they release energy. this concept applies to
balu736 [363]
This applies to nuclear reactions, specifically nuclear fission.

This huge release of energy has been used in atomic bombs and in the nuclear reactors that generate electricity.
6 0
3 years ago
Since entropy is about how energy is shared, it is important to be able to identify places where energy can be put, or degrees o
Fiesta28 [93]

Answer:

Please see answer in explanation

Explanation:

1. Since each molecule has three kinetic degrees of freedom (can move in three independent directions), the gas must have 3N DoFs.

2. Each molecule has the three kinetic degrees of freedom the monotonic atom has ­­ moving without rotating ­­ but it can also spin. There are three axes for it to spin around so we would expect three rotational degrees of freedom, but as were as above, the one about the diatomic molecule's axis doesn't count because of quantum. So we have two rotational DoFs and three kinetic, for a total of 5 per molecules. So the gas will have 5N DoFs.

3.When a spring vibrates it has two DoFs, its KE and its PE, so adding 1 vibration adds 2 DoFs per molecule, giving 7 per molecule and giving thegas 7N DoFs.

6 0
3 years ago
A 1 800-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.60 m before coming into contact
N76 [4]

Answer:

F = 614913.88 N

Explanation:

We are given;

Mass of pile driver; m = 1800 kg

Height of fall of pole driver; h = 4.6 m

Depth driven into beam; d = 13.6 cm = 0.136 m

Now, from energy equations and applying to this question, we can write that;

Workdone = Change in potential energy

Formula for workdone is; W = F × d

While the average potential energy here is; W = mg(h + d)

Thus;

Fd = mg(h + d)

Where F is the average force exerted by the beam on the pile driver while in bringing it to rest.

Making F the subject, we have;

F = mg(h + d)/d

F = 1800 × 9.81 × (4.6 + 0.136)/0.136

F = 614913.88 N

7 0
3 years ago
The compound magnesium phosphate has the chemical formula Mg3(PO4)2. In this compound, phosphorous and oxygen act together as on
zepelin [54]
The 2 means there are two phosphate ions in a molecule of magnesium phosphate.
8 0
3 years ago
Read 2 more answers
Other questions:
  • In which of the following elevator situations would the acceleration be positive. Select TWO answers
    15·1 answer
  • Salt and water is a colloid. <br> True or false?
    7·1 answer
  • Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students?
    6·2 answers
  • If an object has a kinetic energy of 30 j and mass of 34kg how fast is the object moving ?
    5·1 answer
  • A circuit was set up as shown in the diagram . The tgree resistors are identical
    10·1 answer
  • An initially motionless test car is accelerated uniformly to 120 km/h in 8.28 s before striking a simulated deer. The car is in
    15·1 answer
  • You are studying a population of flowering plants for several years. When you present your research findings you make the statem
    15·1 answer
  • I need help plz!!! Please help...
    7·1 answer
  • How long does it take a car traveling at 50 mph to travel 75 miles? Use one of the following to find the answer.
    8·1 answer
  • The graph shows the federal budget from 1980 to 2010. In which period did the federal budget show the greatest deficit?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!