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
slega [8]
3 years ago
5

2. How can people know that they've learned?

Physics
1 answer:
photoshop1234 [79]3 years ago
4 0
Answer: People know that they jap e learned by their mistakes or by someone ya being them something
You might be interested in
At summer camp, the swimming course runs the length (L) of a small lake. To determine the length of the course, the camp counsel
sleet_krkn [62]

Answer:

47 m

Explanation:

Data obtained from the question include the following:

Length of dry leg 1 (L1) = 40 m

Length of dry leg 2 (L2) = 25 m

Length of swimming course (L) =..?

The length of the swimming course can be obtained by using pythagoras theory as shown below:

L² = L1² + L2²

L² = 40² + 25²

L² = 1600 + 625

L² = 2225

Take the square root of both side.

L = √2225

L = 47.1 ≈ 47 m

Therefore, the length of the swimming course is approximately 47 m.

7 0
3 years ago
How to calculate sound of an echo ​
bonufazy [111]

by an echo meter

please flw me and thank my answers

#Genius kudi

5 0
2 years ago
transmission electron microscopes that use high-energy electrons accelerated over a range from 40.0 to 100 kv are employed in ma
Gekata [30.6K]

The spatial limitations in Picometer for the given range of electrons would be around 50 picometers.

What is a transmission electron microscope?

A transmission electron microscope (TEM) is a type of microscope that uses a beam of high-energy electrons to produce detailed images of the structure of materials at the atomic or molecular scale. TEMs work by passing a focused beam of electrons through a thin sample and collecting the transmitted electrons on a fluorescent screen or an electronic detector. The interaction of the sample with the electrons results in the formation of an image that can be magnified and displayed on a computer monitor. TEMs are widely used in the fields of materials science, biology, and nanotechnology and can provide information about the structure, composition, and properties of materials with a high level and resolution.

According to the problem:

The spatial resolution of a transmission electron microscope (TEM) is determined by the size of the electron probe, which is directly related to the energy of the electrons. The higher the energy of the electrons is, the smaller the size of the probe is and the higher the spatial resolution.

At the lower end of the energy range of 40.0 kV, the spatial resolution of the TEM would be on the order of hundreds of nanometers. At the higher end of the range (100 kV), the spatial resolution would be on the order of tens of nanometers.

In general, TEMs with electron energy in the range of 40-100 kV are capable of resolving details down to around 50 picometers (pm). However, the actual spatial resolution will depend on various factors, such as the quality of the electron optics, the stability of the electron beam, and the sample preparation.

It's worth noting that TEMs with even higher electron energies (up to several hundred kV) are available, which can achieve spatial resolutions down to the sub-angstrom level (less than 0.1 pm). However, these instruments are much more expensive and complex to operate than TEMs with lower electron energies.

To know more about de broglie wavelength, visit:

brainly.com/question/17295250

#SPJ4

7 0
10 months ago
An ice cube floats in a glass of water. as the ice melts, what happens to the water level?
Norma-Jean [14]
The water level rises, because ice is made of water
3 0
3 years ago
How do the most common forms of energy work?
DiKsa [7]

Answer:

activity 2

Explanation:

7 0
3 years ago
Other questions:
  • Work output of a large machine in a factory is 89,000 joules, and it’s input is 102,000 joules. Work output of a similar machine
    14·2 answers
  • What are three ways synthetic polymers affect the environment?
    14·1 answer
  • What forces contribute to density
    10·1 answer
  • which of these changes does a submarine encounter as it returns from the bottom of the ocean to the surface of the ocean? a. the
    9·2 answers
  • A gry is an old English measure for length, defined as 1/10 of a line, where line is another old English measure for length, def
    6·1 answer
  • Mystical ride her scooter down the hill from the state of rest when she reaches the bottom of the hill 4.0 seconds later her spe
    9·1 answer
  • If you don’t transfer enough energy via ____, your cars will crash.
    13·1 answer
  • Find the intensity of a 55 dB sound given lo-10-12 wm2
    5·1 answer
  • How do you explain Newton’s third law
    13·2 answers
  • An apple contains 165 Calories. How many actual calories does it contain? How many joules does it contain
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!