Multiple choice questions, only one answer is correct for each question. Please answer the question carefully, they are very important.
1.An example of a vector quantity is
Newtons"Law of cooling"
First "Law of Thermodynamics
3.An increase in the speed of fluid implies the increase in ________________.
Both its dynamic pressure and kinetic energy.
Dynamic pressure, but not kinetic energy.
Kinetic energy, but not dynamic pressure.
None of the above.
4.Newton's 3rd law states
For every action there is an unequal and opposite reaction
For every action there is no reaction
For every action there is an equal and opposite reaction
For every action there is an equal and same direction reaction.
expected in homes to generate electricity by 2020
impractical as of today
used in Tesla cars
wears a cape
1) Momentum is a vector quantity. Momentum is mass multiplied by velocity. Mass is a scalar, velocity is a vector. So momentum is a vector quantity.
2) fourier's law
3) dynamic pressure = rho*v2 / 2 , Kinetic energy = mv2 / 2 So as the speed of fluid increases, both the dynamic pressure and kinetic energy increases.
4) For every action, there is an equal and opposite reaction.
F = -F
5) not sure but i have read somewhere that tesla motor is using superconductors to improve the charging time
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