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
morpeh [17]
3 years ago
5

How kind of cells have cell wall

Physics
1 answer:
Mandarinka [93]3 years ago
7 0
<span>Well, I just took this unit. There are two main kinds of cells, which are made up of smaller organelles: Nucleus, Vacuoles etc. The two main types are Plant and animal. Only Plant cells have walls.</span><span />
You might be interested in
The energy of a photon is proportional to its a) amplitude. d) wave number, k-2m/A c) velocity. b) frequency
Scilla [17]

Answer:

Frequency

Explanation:

Photons are the packet of energy. They are massless and chargeless particles. They travel in the vacuum with the speed of light. The energy of photon is given by :

E=h\nu

Where

h = Planck's constant

\nu = frequency of photon

Or E=\dfrac{hc}{\lambda}

c = speed of light

\lambda = wavelength of photon

From the above equation, it is clear that the energy of photon is directly proportional to its frequency.

5 0
3 years ago
The sound waves from a noisy jet travel from the air into water. Which property of the wave will not change?​
notka56 [123]

The frequency of the wave will not change. Since the change in medium doesn't affect the source of the waves, the frequency of those waves do not change.

Hope this helps! :)

8 0
3 years ago
Select the properties that apply to superconductors.
makkiz [27]
made from pure metals . . . no;
they've been made from all kinds of weird compounds and alloys.
 
conduct electricity with zero resistance . . . yes;
that's why they're called "superconductors".

produce a strong magnetic field . . . possible, but not because it's a superconductor;
just like any other conductor, the magnetic field depends on the current that's flowing in the conductor.

no loss of energy in the transfer of electricity . . .
there's no loss of energy in the current flowing in the superconductor;
but if you tried to transfer the current out of the superconductor into
something else, then there would be some loss.
7 0
3 years ago
Read 2 more answers
In a chemical equation, the chemicals that react are considered . In a chemical equation, the chemicals that are produced are co
vovangra [49]

Answer

Hi,

In a chemical equation, chemicals that react are the reactants, while chemicals that are produced are the products/by products. Both sides of the equation must be balanced.

Explanation

When writing a chemical equation, reactants reacts to produce products. For example in the equation for formation of water, hydrogen combines with oxygen as 2H₂ +O₂→2H₂O where the first part before the arrow represent the reactants and the next part after the arrow are the products. Reactants are on the left where as products are on the right.Coefficient 2, in this cases is used for balancing the equation.

Good luck!

4 0
3 years ago
Read 2 more answers
PLS HELP !!
Ira Lisetskai [31]
A because it’s basic kinetic example
4 0
3 years ago
Read 2 more answers
Other questions:
  • A wave with a frequency of 190 hz and a wavelength of 28.0 cm is traveling along a cord. the maximum speed of particles on the c
    9·1 answer
  • A ball is released at the top of a ramp at t =0. which is the speed of the ball at t=4
    9·2 answers
  • NEED HELP!!!!!! CAN SOMEBODY HELP ME?
    15·1 answer
  • Which is a warning sign that someone needs the help of a mental health professional
    11·2 answers
  • An electron is moving at a speed of 4.8 × 10 6 m/s at an angle of 30.0° with respect to a uniform magnetic field of 9.2 × 10 –4
    6·1 answer
  • What does the half life for a radioactive material mean?
    8·1 answer
  • The speed you read on a speedometer is ____.
    11·1 answer
  • According to this graph, the acceleration
    8·1 answer
  • The model represents a fluorine (F) atom. What is the mass of the atom?
    7·1 answer
  • Friction is a force in which two objects __________. A. Collide and move in one direction B. Are repelled from each other C. Sli
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!