Answer: The correct answer is True.
Explanation:
Average kinetic energy of the particles is defined as the average of the kinetic energies of the particles present in a medium. It is the measure of temperature of the medium.
Mathematically,
where,
K = kinetic energy
T = Temperature
As, kinetic energy of the particles is directly proportional to the temperature. Increase in temperature will result in the increase in the kinetic energy and vice-versa.
We are given, that the temperature of the two glasses are same, so the average kinetic energy of the particles will also remain same.
Hence, the correct answer is True.
The statement ‘If two glasses of water are at the same temperature, the average kinetic energy of the particles of water in each glass is the same’ is true. This is because temperature is directly proportional with the kinetic energy of the molecules. If there is no change in temperature, there would not be kinetic movement of the molecules.
For this case, the first thing you should do is take into account the definition of normal force.
By definition, we have:
If we define the coordinate system as:
Then An object resting on a wall can have normal force in a horizontal direction.
Answer:
The normal force is perpendicular to the surface. The direction can be horizontal. Example: an object on a wall.
Answer:
Explanation:
Your initial velocity () is 10 m/s, your time is 20 seconds. Although it is not explicitly mentioned in the problem, since you know the car comes to a stop, your final velocity () is 0 m/s.
The equation you can use to solve for acceleration (a) is
1. Plug in the numbers you do have, so your equation will look like this:
0=10+a(20)
2. Solve for a.
-10= 20a
-10/20=a
-0.5= a
a = -0.5
The image produced is virtual and smaller than the object.
The image produced is real and enlarged.
The image produced is real and smaller than the object.
The image produced is virtual and of the same size as the object.
Answer:
The image produced is virtual and smaller than the object.
Explanation:
For concave lens we know that
here we have
Magnification will be given as
so image will be virtual and formed behind the lens
Now the object position is shifted to new position at distance of focal length
now again we will have
here we have
Magnification will be given as
So again we will have virtual image with magnification 1/2
so here size of image is less than object size by factor of 1/2 and it is virtual
Answer:
Ruler. The first tool that can be used to measure length is a ruler. A ruler can be made of metal, wood or plastic. A ruler has linear measurement markings.
Explanation: