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
trasher [3.6K]
3 years ago
9

Find a glass jar with a screw-top metal lid. Close the lid snugly and put the jar into the refrigerator. Leave it there for abou

t 10 minutes and then take the jar out and try to open the lid. (a) Did the lid become tighter or looser? Explain your observation.
Physics
1 answer:
DochEvi [55]3 years ago
5 0

Answer:

The lid becomes tighter

It becomes tighter because metals have a lower heat capacity than glass meaning their temperature drops (or increases) much faster than glass for the same energy change. So in this example, the metal will contract faster than the glass causing it to be more tighter around the glass.

You might be interested in
A number has a atomic number of 9 and an atomic mass of 19 amu. how many protons and how many neutrons are present in the atom
adelina 88 [10]
I think the answer to this is 28.
6 0
3 years ago
If a baseball has a negative velocity and a negative acceleration, its speed is
Korvikt [17]
Answer:constant cause it keeps happening Or it might be decreasing but I’m not sure
6 0
3 years ago
I need help with question 6 and 7!!! Also, how to do the back???
lora16 [44]
Reword the questions and you’ll get it right
7 0
2 years ago
Read 2 more answers
A car is travelling at a constant speed of 26.5 m/s. Its tires have a radius of 72 cm. If the car slows down at a constant rate
maksim [4K]

Answer:

Magnitude of angular acceleration = -3.95 rad/s²

Explanation:

Angular acceleration is the ratio of linear acceleration and radius.

That is

        \texttt{Angular acceleration}=\frac{\texttt{Linear acceleration}}{\texttt{Radius}}\\\\\alpha =\frac{a}{r}

Radius = 72 cm = 0.72 m

Linear acceleration is rate of change of velocity.

a=\frac{11.7-26.5}{5.2}=-2.85m/s^2

Angular acceleration

        \alpha =\frac{a}{r}=\frac{-2.85}{0.72}=-3.95rad/s^2

Angular acceleration = -3.95 rad/s²  

Magnitude =  3.95 rad/s²     

4 0
3 years ago
What is the maximum value of the magnetic field at a<br> distance2.5m from a 100-W light bulb?
MA_775_DIABLO [31]

To solve this problem we will apply the concepts related to the intensity included as the power transferred per unit area, where the area is the perpendicular plane in the direction of energy propagation.

Since the propagation occurs in an area of spherical figure we will have to

I = \frac{P}{A}

I = \frac{P}{4\pi r^2}

Replacing with the given power of the Bulb of 100W and the radius of 2.5m we have that

I = \frac{100}{4\pi (2.5)^2}

I = 1.2738W/m^2

The relation between intensity I and E_{max}

I = \frac{E_max^2}{2\mu_0 c}

Here,

\mu_0 = Permeability constant

c = Speed of light

Rearranging for the Maximum Energy and substituting we have then,

E_{max}^2 = 2I\mu_0 c

E_{max}=\sqrt{2I\mu_0 c }

E_{max} = 2(1.2738)(4\pi*10^{-7})(3*10^8)

E_{max} = 30.982 V/m

Finally the maximum magnetic field is given as the change in the Energy per light speed, that is,

B_{max} = \frac{E_{max}}{c}

B_{max} = \frac{30.982 V /m}{3*10^8}

B_{max} = 1.03275 *10{-7} T

Therefore the maximum value of the magnetic field is B_{max} = 1.03275 *10{-7} T

3 0
3 years ago
Other questions:
  • Which statement best describes a physical change?
    10·1 answer
  • You have created a circuit in science class. You are using a 9 volt battery. You have generated what type of current?
    14·2 answers
  • Stars only emit light within the visible spectrum of the electromagnetic spectrum.
    14·1 answer
  • A tissue cross-section viewed on a microscope slide shows a cell of almost rectangular shape with dimensions 6.9 × 10-4 cm by 1.
    5·1 answer
  • Explain convection in as little as possible
    10·2 answers
  • A physics student standing on the edge of a cliff throws a stone vertically downward with an initial speed of 10 m/s. The instan
    7·1 answer
  • Which is directly proportional to your weight on a planet's surface?
    7·1 answer
  • Calculate the acceleration of a car in m/s that can go from rest to 28 m/s in 10 seconds.
    9·1 answer
  • There would be no water supply tomorrow at home. How much water should be stored for tomorrow? Why do you emphasize on estimatio
    11·1 answer
  • If you wanted to see a star behind an interstellar dust cloud, what "colour" of light should you look for?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!