Explanation:
KE = q
½ mv² = mCΔT
ΔT = v² / (2C)
ΔT = (200 m/s)² / (2 × 236 J/kg/°C)
ΔT = 84.7°C
<h2>The time taken is 1 second </h2>
Explanation:
Suppose the first diamond falls for t seconds
The downward displacement S₁ = u t +
g t²
here u = 0 , because it was at rest initially
Thus S₁ =
g t² I
Similarly second diamond moves for time ( t - 0.9 ) sec
The distance covered by it is
S₂ =
g (t - 0.9 )²
The separation between the two is 13 m
Thus S₁ - S₂ = 13 m
g t² -
g t² + 0.9 g t - 0.4 g = 13
or 9 t = 13 - 4 = 9
Hence t = 1 sec
Answer:
Speed of the runner during video interval is 6.49 m/s
Explanation:
According to the problem,
Number of frames recorded by camera in 1 second = 50
Time takes by camera to record 1 frame = (1/50) s
Time taken by camera to record 77 frames, t =
s
Distance covered by the runner during the video recording, d = 10 m
Speed, v = 
Substitute the values of d and t in the above equation.
v = 
v = 6.49 m/s
Answer:
100.11 m
Explanation:
Given:
Coefficient of volume expansion,
/°C.
Initial length of rod, 
Change in temperature, ΔT=
°C
We know that,
/°C
Here,
is the coefficient of linear expansion.
Now, we know that,
Change in length (Δl) is given as,

Plug in all the values and solve for
.
This gives,
Therefore, the length of rod after expansion is
m.
Answer:
English
Electrical phenomena are commonplace and unusual events that can be observed and that illuminate the principles of the physics of electricity and are explained by them. Electrical phenomena are a somewhat arbitrary division of electromagnetic phenomena
Los fenómenos eléctricos son eventos comunes e inusuales que se pueden observar y que iluminan los principios de la física de la electricidad y son explicados por ellos. Los fenómenos eléctricos son una división algo arbitraria de los fenómenos electromagnéticos.