Answer:
both statements are truth
Explanation:
a-The Joule effect, also called Joule's law, is the thermal manifestation of electrical resistance. ... In all these cases, it is intended to generate thermal energy with electricity passing through its conductors. This heat they give off is due to the Joule effect.
b-sure of a liquid tank depends only on the density of the liquid and depth from the free surface. It is a scalar quantity and is same in all directions, at a point.
Answer:
It would be A or a speed skater moving at an increasing speed on a straight track
Explanation:
the reasoning behind this is that the speed skater is getting faster or is accelerating.
The bending of the light when it changes media is called a refraction. The wave bend as it enters the medium at a very different speed, that way, it will be seeming to look like the light is being bent by something, when in fact, the wave just goes through transitions from a fast medium to a slower one.
<u>Option a.</u>The particle of larger mass has more momentum.
How this is explained?
- Given two particles are of different mass & start from rest .
- They have same net force & distance travelled due to force is also constant.
- We know Kinetic energy
- and momentum p = mv .
- The same gives larger mass a smaller acceleration.
- The body which has larger mass will take a longer time interwal to move through same distance; the impulse given to larger mass is larger, thus larger mass will have a greater final momentum.
- Thus option(a).
What is a momentum?
- In Newtonian mechanics, linear momentum, translational momentum, or simply momentum is the product of the mass and velocity of an object.
- It is a vector quantity, possessing a magnitude and a direction.
- If m is an object's mass and v is its velocity (also a vector quantity), then the object's momentum p is :p=mv.
- In the International System of Units (SI), the unit of measurement of momentum is the kilogram metre per second (kg⋅m/s), which is equivalent to the newton-second.
To know more about momentum, refer:
brainly.com/question/1042017
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