Answer:
60V
Explanation: . V = IR = 1
30*2=60
Answer:modeled as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field.
Explanation:
Answer:
d.music comes out from a television speaker
Explanation:
because television use electricity (electrical energy) and produce sound (sound energy) that we hear while watching tv
Answer:
a) 38.3mA
b) 109.396A/m^2
c) 1.283cm/s
d) 226.582V/m
Explanation:
The equation for current is given by:
I = V/R = 35.6/ 935 = 0.03829 A Approximately 38.3mA
b) The equation to find the magnitude is given by:
J = I/A = 0.03829/ 0.000350m^2
J = 109.396A/m^2
c) The equation to calculate drift velocity of the electron is given by: Vd = J/ ne = 109.396/( 5.33×10^23 )(1.60×10^-19)
Vd = 0.01283 approximately 1.283cm/s
d) The magnitude of electric field in the block, E = V/L = 35.8/ 0.158m = 226.582V/m
Answer:
Mass needed to fire is ![3 \times 10^4 kg](https://tex.z-dn.net/?f=3%20%5Ctimes%2010%5E4%20kg)
Explanation:
Mass of the spaceship ![m_{0} = 5.30 \times 10^4 kg](https://tex.z-dn.net/?f=m_%7B0%7D%20%3D%205.30%20%5Ctimes%2010%5E4%20kg)
Initial velocity of the spaceship![v_{0} = 5.75 \times 10^3 m/s](https://tex.z-dn.net/?f=v_%7B0%7D%20%3D%205.75%20%5Ctimes%2010%5E3%20m%2Fs)
Final velocity of the spaceship ![v_{f} = 8.39 \times 10^3 m/s](https://tex.z-dn.net/?f=v_%7Bf%7D%20%3D%208.39%20%5Ctimes%2010%5E3%20m%2Fs)
Take exhaust velocity
The velocity of the spaceship in the space is
![v_{f}=v_{0}+u\times ln(\frac{m_{0}}{m} )\\8.39 \times 10^3= 5.75 \times 10^3+ 4.6 \times 10^3 \times ln(\frac{5.30 \times 10^4}{m} )\\8.39 \times 10^3-5.75 \times 10^3= 4.6 \times 10^3 \times ln(\frac{5.30 \times 10^4}{m} )\\2.64 \times 10^3=4.6 \times 10^3 \times ln(\frac{5.30 \times 10^4}{m} )\\\frac{2.64 \times 10^3}{4.6 \times 10^3} = ln(\frac{5.30 \times 10^4}{m} )\\0.57=ln(\frac{5.30 \times 10^4}{m} )\\e^{0.57}=\frac{5.30 \times 10^4}{m}\\m=\frac{5.30 \times 10^4}{1.768} \\m=3 \times 10^4 kg](https://tex.z-dn.net/?f=v_%7Bf%7D%3Dv_%7B0%7D%2Bu%5Ctimes%20ln%28%5Cfrac%7Bm_%7B0%7D%7D%7Bm%7D%20%29%5C%5C8.39%20%5Ctimes%2010%5E3%3D%205.75%20%5Ctimes%2010%5E3%2B%204.6%20%5Ctimes%2010%5E3%20%5Ctimes%20ln%28%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%20%29%5C%5C8.39%20%5Ctimes%2010%5E3-5.75%20%5Ctimes%2010%5E3%3D%204.6%20%5Ctimes%2010%5E3%20%5Ctimes%20ln%28%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%20%29%5C%5C2.64%20%5Ctimes%2010%5E3%3D4.6%20%5Ctimes%2010%5E3%20%5Ctimes%20ln%28%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%20%29%5C%5C%5Cfrac%7B2.64%20%5Ctimes%2010%5E3%7D%7B4.6%20%5Ctimes%2010%5E3%7D%20%3D%20ln%28%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%20%29%5C%5C0.57%3Dln%28%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%20%29%5C%5Ce%5E%7B0.57%7D%3D%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7Bm%7D%5C%5Cm%3D%5Cfrac%7B5.30%20%5Ctimes%2010%5E4%7D%7B1.768%7D%20%5C%5Cm%3D3%20%5Ctimes%2010%5E4%20kg)
Mass needed to fire is ![3 \times 10^4 kg](https://tex.z-dn.net/?f=3%20%5Ctimes%2010%5E4%20kg)