Answer:
841 J/kg.K
Explanation:
The computation of the specific hear of the glass is shown below:
As we know that
E= cmΔt
where
c denotes specific heat
m denotes 0.38 kg
Δt = temperature = 22k
E denotes energy = 7032 J
Now
7032 J = (0.38) (22) (c)
7032 J = 8.36 (c)
So C = 7032 J ÷ 8.36
= 841 J/kg.K
Answer:
(B² x e x d²) / V = M
Explanation:
Under electric field by potential gradient if K is the kinetic energy imparted to
the charged particle
K = 1/2 M u² = V x 2e
When charged particle enters the magnetic field with velocity u , it travels on circular path with radius d . So
centripetal force = magnetic force
M u² / d = B x 2e x u
u = (B x 2e x d) / M
Putting this value of u in the relation above
m (B² x 4e² x d²) / 2M² = V x 2e
(B² x 4e² x d²) / V x 2e = 2 M
(B² x e x d²) / V = M
The person walking down the sidewalk follows the newton's third law of motion.
Explanation:
- A person is able to walk down the sidewalk by using the reaction forces from the ground.
- In simple term, feet pushes the ground and the reaction forces makes the feet able to walk.
- Another important force included in the walking mechanism is friction. With out friction one cannot walk down the sidewalks.
- Hence the forces involved in the walking of a person down the sidewalk are:
- Friction force
- Action and reaction force between ground and person's feet.
The formula for calculating wavelength ʎ is:
ʎ = s / f
where ʎ is wavelength, s is speed of sound, f is frequency
ʎ (large organ pipe) = (344 m/s) / (30 s-1) = 11.47 m
<span>ʎ (piccolo) = (344
m/s) / (1.5x10^4 s-1) = 0.023 m</span>
So the difference is:
11.47 – 0.023 = 11.45 m
Answer:
<span>11.45 m</span>
