Phase changes are not associated with a change in frequency,
wavelength, amplitude, color, volume, mass, national origin,
ethnicity, loudness, weight, opacity, or unit cost.
Answer:
Explanation:
(a)
Magnitude of =
= 4.47 m
Let θ be the direction of vector D
θ = 63.44°
(b)
Magnitude of =
= 8.485 m
Let θ be the direction of vector D
θ = 135°
Answer:
Part 1)
E = 10200 Cal per day
Explanation:
Part 1)
Small mouse used the energy of 3 Cal
mass of the mouse = 20 g
so energy used per day per unit of mass is given as
Now for a person of mass 68 kg the energy is
per day
Part 2)
Resting power means the rate of energy consumed by the body while we are not doing any work and all that energy is consumed for several biological process.
Answer:
The physics behind skydiving involves the interaction between gravity and air resistance.
Explanation:
When a skydiver jumps out of a plane he starts accelerating downwards, until he reaches terminal speed. This is the speed at which the drag from air resistance exactly balances the force of gravity pulling him down.