Answer:
The voltage drop across the bulb is 115 V
Explanation:
The voltage drop equation is given by:
![V=\frac{\Delta W}{\Delta q}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B%5CDelta%20W%7D%7B%5CDelta%20q%7D)
Where:
ΔW is the total work done (4.6kJ)
Δq is the total charge
We need to use the definition of electric current to find Δq
![I=\frac{\Delta q}{\Delta t}](https://tex.z-dn.net/?f=I%3D%5Cfrac%7B%5CDelta%20q%7D%7B%5CDelta%20t%7D)
Where:
I is the current (2 A)
Δt is the time (20 s)
![2=\frac{\Delta q}{20}](https://tex.z-dn.net/?f=2%3D%5Cfrac%7B%5CDelta%20q%7D%7B20%7D)
![q=40 C](https://tex.z-dn.net/?f=q%3D40%20C)
Then, we can put this value of charge in the voltage equation.
![V=\frac{4600}{40}=115 V](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B4600%7D%7B40%7D%3D115%20V)
Therefore, the voltage drop across the bulb is 115 V.
I hope it helps you!
Answer:
the maximum vertical height the person in the cart can reach is 18.42 m
Explanation:
Given;
mass of the person in cart, m₁ = 45 kg
mass of the cart, m₂ = 43 kg
acceleration due to gravity, g = 9.8 m/s²
final speed of the cart before it goes up the hill, v = 19 m/s
Apply the principle of conservation of energy;
![mgh_{max} = \frac{1}{2}mv^2_{max}\\\\ gh_{max} = \frac{1}{2}v^2_{max}\\\\h_{max} = \frac{v^2_{max}}{2g} \\\\h_{max} =\frac{(19)^2}{2\times 9.8} \\\\h_{max} = 18.42 \ m](https://tex.z-dn.net/?f=mgh_%7Bmax%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7Dmv%5E2_%7Bmax%7D%5C%5C%5C%5C%20gh_%7Bmax%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7Dv%5E2_%7Bmax%7D%5C%5C%5C%5Ch_%7Bmax%7D%20%3D%20%5Cfrac%7Bv%5E2_%7Bmax%7D%7D%7B2g%7D%20%5C%5C%5C%5Ch_%7Bmax%7D%20%3D%5Cfrac%7B%2819%29%5E2%7D%7B2%5Ctimes%209.8%7D%20%5C%5C%5C%5Ch_%7Bmax%7D%20%3D%2018.42%20%5C%20m)
Therefore, the maximum vertical height the person in the cart can reach is 18.42 m
The flowers reflect relatively low frequency and low amplitude light waves.
White light contains a spectrum of colors, and red light is at the beginning of this spectrum in terms of energy. This means that it has the lowest frequency, as the energy of a wave of light is directly proportional to its frequency.
The amplitude of a light wave gives a measure of how intense the light is. A dull light means that the amplitude of the wave is low.
Answer:
d. zero
Explanation:
Constant velocity means the acceleration is zero. In this case the velocity does not change,
hope this helps you
have a good day :)
Answer:
Yes labor is required therefor jobs like cashier, and other low skill labor jobs I'll not be required
Explanation: