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
Tom [10]
3 years ago
9

An electric bell is placed inside a transparent glass jar. The bell can be turned on and off using a switch on the outside of th

e jar. A vacuum is created inside the jar by sucking out the air. Then the bell is rung using the switch. What will we see and hear?
Physics
2 answers:
Art [367]3 years ago
5 0
The answer is :  We’ll see the bell move, but we won’t hear it ring.  This is    because light can travel through vacuum but sound cannot.  Sound waves are vibrations of particles in any media, so sound requires a medium to travel, and it cannot travel in a vacuum as there is no particles to vibrate.  
qwelly [4]3 years ago
5 0
Well see the bell move but won't hear it ring
You might be interested in
I need help with #40 need answer and show me what you multiplied please
ale4655 [162]
(0.5)×(0squared)×(3)=(1.5j)
3 0
3 years ago
What do you think would happen to the force of attraction of two interacting charges if their distance apart is halved?
sweet [91]

Answer:

The new force becomes 4 times the initial force.

Explanation:

The force of attraction or repulsion is given by the relation as follows :

F=k\dfrac{q_1q_2}{d^2}

Where

d is the distance between the interacting charges

F is inversely proportional to the distance between charges.

If the distance is halved, d'=(d/2), new force is given by :

F'=k\dfrac{q_1q_2}{d'^2}\\\\=k\dfrac{q_1q_2}{(\dfrac{d}{2})^2}\\\\=k\dfrac{q_1q_2}{\dfrac{d^2}{4}}\\\\=4\times \dfrac{kq_1q_2}{d^2}\\\\F'=4F

So, the new force becomes 4 times the initial force.

4 0
3 years ago
Please help me with this
Firlakuza [10]

Answer:

can't see anything sorry can't help

7 0
2 years ago
Read 2 more answers
Explain the difference between cool air and warm air
Naddik [55]

Answer: ok

Explanation:

The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less.

3 0
3 years ago
What is power?
hammer [34]
We can define power as the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is joules per second (J/s). Sometimes the power of motor vehicles and other machines are given in terms of Horsepower (hp) which is approximately equal to 745.7 watts.


Power is the rate at which a force is applied to an object for example.current wire
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is heat of combustion?
    15·1 answer
  • A spherical inflated balloon is submerged in a pool of water. if it is further inflated so that its radius doubles, how is the b
    11·1 answer
  • A rocket sled for testing equipment under large accelerations starts at rest and accelerates according to the expression a = (3.
    5·1 answer
  • When a liquid is introduced into the air space between the lens and the plate in a Newton's-rings apparatus, the diameter of the
    15·1 answer
  • A 68.0 Kg tightrope walker stands at the center of a rope. The rope supports are 10 m apart and the rope sags 8.00 degrees at ea
    13·1 answer
  • You are driving on the interstate and see a sign that says the speed limit is 50 miles per hour.
    9·2 answers
  • if motorbike can travel 90 kilometre on 2 litre of petrol find the distance it can travel on 5 litre of petrol​
    14·1 answer
  • If a ball is thrown straight up into the air with an initial velocity of 40 ft/s, it height in feet after t second is given by y
    6·1 answer
  • Does visible have more energy than infrared radiation?
    15·1 answer
  • A/An __________ is a small, raised red lesion that is less than 0.5 cm in diameter and does not contain pus.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!