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
mestny [16]
3 years ago
9

Why is metal often used for cooking pans? Metals

Physics
1 answer:
Yanka [14]3 years ago
3 0

A.

Explain

Metals are good conductors of heat, which is important for cooking (both heating and cooling occurs rapidly

You might be interested in
PLS HELP:)
Monica [59]
The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). The reflected ray will make an angle of 60 degrees (90 - 30 degrees) with the mirror surface.
6 0
3 years ago
1. Select all that apply.
aalyn [17]

The answers are as follows:

1. A scientific theory: <em>i)  is supported by evidence  ii) can evolve over time  </em>

A scientific theory can be defined as a set of interconnected statements or information about a particular topic, that has consistently been found by various scientists during repeated experimental investigations over time. For a scientific theory to be accepted as a theory, it must be backed up by empirical and scientifically derived data and statistics. Additionally, scientific theories are not absolute and can evolve and expand over time, if new valid and reliable data about the same topic is found.

2.  A chemist is likely to: <em>i) analyze the ingredients in ice cream ii) determine how to separate gasoline from other substances in petroleum </em>

A chemist is a scientist who specializes in topics related to Chemistry. A chemist investigates topics such as: elements, compounds, chemical reactions, chemical properties etc. Thus, a chemist is likely to analyze the ingredients in ice cream, in order to determine its chemical composition. Additionally, a chemist would investigate how to separate gasoline from other substances in petroleum, since this procedure would involve some form of chemical reactions.  

3. Science can be applied to:<em> i) government regulation ii) healthcare iii) telemarketing iv) environmental engineering v) banking </em>

Science can be defined as a broad and widely encompassing discipline that systematically and empirically investigates living organisms, their behavior, the physical world they live in, etc., through experimentation and observation. Science applies to government regulations since it can help shape the policies that the government enforces- such as policies that enhance the health and well-being of citizens. Healthcare and environmental engineering are sciences, and therefore, obviously contain scientific elements. Banking also involves science, since research, planning, policies, etc., require research.  

4. The fields of science and mathematics are so interdependent because:<em> i) Scientists need to be able to take careful measurements. ii) Scientists need to be able to make precise measurements. </em>

In simple terms, mathematics and science are interdependent, because both involve calculations in order to reach a solution or a conclusion. This is especially apparent in Physics (a science), which uses several calculations to prove laws and theories. Similarly, sciences, including: psychology, biology and chemistry, also involve mathematics and calculations in order to analyse data and reach conclusions. Both Mathematics and Science require careful and precise measurements in order to obtain accurate results.

5. The following questions can use science as a method of inquiry: <em> i) How can we protect crops from drought? ii) Did dinosaurs exist? </em>

Out of all the options listed in the question, only the aforementioned questions can use science as a method of inquiry. This is because, questions such as “Is cloning appropriate?” and “Why is jazz a great type of music?”, are qualitative and subjective in nature, and cannot be answered using scientific investigation- which involve measurements and statistical analyses. On the other hand, investigating how to protect crops from drought and the existence of dinosaurs can use science as a method of inquiry, because these investigations would involve measurement and analyses in order to obtain results and a valid conclusion.  

6 1
3 years ago
Read 2 more answers
What is meant by the phrase " a consistent method of measurement "? someone help plss
Mars2501 [29]
<span><span>D.</span><span>Measurements are taken in a way that is the same every time.- apex

</span></span>
8 0
3 years ago
Read 2 more answers
Which of these is exhibiting kinetic energy?
Alenkasestr [34]

Answer:

A.a space station orbiting Earth

Explanation:

As we know that kinetic energy given as

K.E.=1/2 m v²

Where m= mass

v= velocity

If the velocity of the object is zero then it posses zero kinetic energy.

We also know that when object at a height from the ground or from a reference line then it posses potential energy and it does not have kinetic energy because object is in rest position.

In the option B and C system is in rest position that is why these type of system posses zero kinetic energy.

So the answer is A.

A.a space station orbiting Earth

7 0
4 years ago
F the mass of both vehicles were doubled, how would the final velocity and the change in kinetic energy be affected? (Select all
Ira Lisetskai [31]

Answer:

a) True. Speeds are reduced by half .  

e) True. kinety energy  is reduced by half

Explanation:

In order to analyze the statements you have we have to raise the problem solution.

If we fear a constant force when double the mass we can see the result in acceleration with Newton's second law

    F = m a₁

    F = (2m) a₂

    m a1 = 2m a₂

    a₂ = ½ a₁

We see that when I double the mass the acceleration is reduced by half

With kinematics we see that there is a linear relationship between speed and acceleration

    v_{f} = v₀ + at

For the same initial speed and the same time if the acceleration is reduced by half the speed is reduced by half.

Therefore, by doubling the mass the speed reduces by half

kinetic energy is

     K = ½ m v²

     K = ½ (2m) (v/2)²

     K = (½ m v²) /2

     K = Ko / 2

Now we can review the claims

a) True. Speeds are reduced by half

b) False. We saw that they change their value

c) False. They reduce not increase

d) False. We saw that the kinetic energy is reduced

e) True. It is reduced by half

f) False. We saw that change

4 0
3 years ago
Other questions:
  • Hi please help me with this question. ..
    6·1 answer
  • A transmission system at a radio station uses a/an _______ to convert a direct current into a high frequency alternating current
    5·2 answers
  • What would the average speed in kph of a horse and rider be if they cover a total distance of 14 km in 249 minutes
    7·1 answer
  • A stone has a mass of 100 grams and a volume of 10ml water has a density of 1 g/ml will the stone sink or float?
    5·2 answers
  • Which phase changes are endothermic?
    13·2 answers
  • A 0.20 kg mass (m1) hangs vertically from a spring and an elongation of the spring of 9.50 cm (r1) is recorded. With a mass (m2)
    9·1 answer
  • Use the drop-down menus to complete each statement about tornado safety.
    10·2 answers
  • Watch as the coefficients are being
    14·1 answer
  • Please help I’m dying trying to solve this.
    13·1 answer
  • 4 This giraffe walks at a speed of 2 meters per second Where will the giraffe be 5 seconds from now? (The trees are 5 meters apa
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!