Advertisements
Advertisements
प्रश्न
What is the form of that graph between
(i) K.E. and velocity for a constant mass?
(ii) K.E. and mass for a constant velocity?
Advertisements
उत्तर
(i) We have, for a constant mass,
K.E. ∝ v2
Hence, the graph is a parabola.
(ii) We have, for a constant velocity
K.E. ∝ m
Hence, the graph is a straight line.
संबंधित प्रश्न
Geothermal energy is produced by the:
(a) fission of radioactive materials
(b) burning of coal inside the coal mines
(c) combustion of natural gas deep inside the earth
(d) fusion of radioactive substances
How many MeV are equivalent to 1 atomic mass unit (u)?
Fill in the blank
Energy possessed by a compressed spring is ______ energy.
Name the type of energy (kinetic energy K or potential energy U) possessed in the given cases:
A moving cricket ball
Select the renewable and non-renewable sources of energy from the following:
Water
State whether a solar cell produces a.c. or d.c.
The following are some of the energy transformations.
A. Electrical to light
B. Work to heat
C. Chemical to light
D. Electrical to sound
E. Mechanical to electrical
Identify the energy transformation that takes place in the following by inserting the corresponding letter in the shape provided.
(i) A candle flame
(ii) A torch is lighted
(iii) A microphone is used in a meeting
(iv) A cycle dynamo
(v) A piece of metal is being filed
What do you understand by mechanical energy?
What happens to the K.E. when
(i) the mass of the body is doubled at a constant velocity and
(ii) the velocity of the body is doubled at constant mass?
State the energy changes which take place when:
A toy car spring is wound and car is made to run on level floor.
