Answer:
A) The time of the observer on the surface of the mars is the proper time.
B) Duration = 434.65 μs
Explanation:
A) From the question, we see that the signal light blinked on the Martian surface which is the same frame of reference of the observer at rest. Hence, we can say that the time of the observer on mars is the proper time.
B) time dilation equation is given as;
Δt =γ•Δt(o)
Where Δt is the duration of the light pulse measured by the pilot of the spaceship.
γ = 1/(√(1-β²))
Now,
β is expressed as β = u/c
Thus;
γ = 1/(√(1-(u/c)²)) = 1/(√(1-(u²/c²)))
Where, u is the speed of the spaceship relative to the surface of planet mars.
From the question, u = 0.985c
Thus, plugging in the relevant values, we obtain;
Δt = [1/(√(1-(0.985²c²/c²))] x 75
Δt = [1/(√(1-(0.985²))] x 75 = [1/(√(0.029775)]75= 5.7953 x 75 =
434.65μs
Answer: a) 0.43 pF (10~-12F); 5.16 pC (10^-12C); 4.85 *10^3 N/C
Explanation: In order to solve this problem we have to consider the expresion for the capacitor of parallel plates, which is
ΔV=Q/C in this case C=A*εo/d where A is the area of the plates and d its separation,
The we have;
C=0,00012 m^2* 8,85*10~ -12/0.0025 m= 0.43 pF
Then we have that
Q= ΔV*C= 12V * 0.43 pF=5.16 pC
Finally, the electric field inside the plates is given by:
E=Q/(A*εo)= 5.16 pC/(0.00012 m^2*8.85 *^10-12 C^2/N*m^2)=4.85 *10^3 N/C
Answer:
carbon dioxide is produced each year per household from washing and drying a load of washing every two days. These carbon dioxide negatively impact the environment and provoke climate change. Also, when washing clothes, around 90% of the energy goes into heating up the water
