3-6 seconds time interval is the object slowing down.
The correct option is C.
<h3>What is a time interval?</h3>
The time interval is the span of time among two specified times. To put it another way, it is the amount of time that has passed between the event's start and finish.
<h3>What are different time intervals?</h3>
The time interval is the length of time that the aim uses to gather data and determine values. The critical overview can be one or more seconds, minutes, hours, days, weeks, or months. The period must be greater than zero and positive. When providing minutes, the amount of minutes must divide evenly by 60.
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The complete question is -
During which time interval is the object slowing down ?
a- 8-10 seconds
b- 6-8 seconds
c- 3-6 seconds
d- 0-3 seconds
Answer: Technician B
Explanation: In manual cars,the clutch safety is designed to stop the vehicle from moving when you start the gnition. It prevents power from flowing into the circuit . This is found in the pedal mechanism of cars so depressing the clutch pedal will likely cause a defective in the clutch safety. You will begin to perceive the clutch burning and white fumes coming out from the pedal.
Answer:
a). 87.5 mA or
A
b). 1.78 ![\frac{m}{s}](https://tex.z-dn.net/?f=%5Cfrac%7Bm%7D%7Bs%7D)
Explanation:
![d=2.6 mm \\Q=420C\\t=80min\\n=5.8x10^{28} \\q=1.6x10^{-19}](https://tex.z-dn.net/?f=d%3D2.6%20mm%20%5C%5CQ%3D420C%5C%5Ct%3D80min%5C%5Cn%3D5.8x10%5E%7B28%7D%20%5C%5Cq%3D1.6x10%5E%7B-19%7D)
n the number of free electrons is 28 in text reference and if they don't give q is take as the charge of electron.
a).
A
b).
![I=n*abs (q)*V_{d}*A](https://tex.z-dn.net/?f=I%3Dn%2Aabs%20%28q%29%2AV_%7Bd%7D%2AA)
![A= \pi * (\frac{d}{2})^{2} \\A=\pi (*\frac{2.6x10^{-3} m}{2})^{2} \\A=5.309x10^{-6}](https://tex.z-dn.net/?f=A%3D%20%5Cpi%20%2A%20%28%5Cfrac%7Bd%7D%7B2%7D%29%5E%7B2%7D%20%5C%5CA%3D%5Cpi%20%28%2A%5Cfrac%7B2.6x10%5E%7B-3%7D%20m%7D%7B2%7D%29%5E%7B2%7D%20%20%5C%5CA%3D5.309x10%5E%7B-6%7D)
Initially there were 10 bulbs of 60 Watt power
So total power of all bulbs = 60 * 10 = 600 W
now each bulb used for 4 hours daily
so total energy consumed daily
![E = P * t](https://tex.z-dn.net/?f=E%20%3D%20P%20%2A%20t)
![E = 600 * 4 = 2400 Wh](https://tex.z-dn.net/?f=E%20%3D%20600%20%2A%204%20%3D%202400%20Wh)
![E = 2.4 kWh](https://tex.z-dn.net/?f=E%20%3D%202.4%20kWh)
now we have total power consumed in 1 year
![E = 365 * 2.4 = 876 kWh](https://tex.z-dn.net/?f=E%20%3D%20365%20%2A%202.4%20%3D%20876%20kWh)
cost of electricity = 10 cents/ kWh
so total cost of energy for one year
![P_1 = 876 * 10 = 8760 cents = $87.60](https://tex.z-dn.net/?f=P_1%20%3D%20876%20%2A%2010%20%3D%208760%20cents%20%3D%20%2487.60)
Now if all 60 Watt bulbs are replaced by 30 Watt bulbs
So total power of all bulbs = 30 * 10 = 300 W
now each bulb used for 4 hours daily
so total energy consumed daily
![E = P * t](https://tex.z-dn.net/?f=E%20%3D%20P%20%2A%20t)
![E = 300 * 4 = 1200 Wh](https://tex.z-dn.net/?f=E%20%3D%20300%20%2A%204%20%3D%201200%20Wh)
![E = 1.2 kWh](https://tex.z-dn.net/?f=E%20%3D%201.2%20kWh)
now we have total power consumed in 1 year
![E = 365 * 1.2 = 438 kWh](https://tex.z-dn.net/?f=E%20%3D%20365%20%2A%201.2%20%3D%20438%20kWh)
cost of electricity = 10 cents/ kWh
so total cost of energy for one year
![P_1 = 438 * 10 = 4380 cents = $43.80](https://tex.z-dn.net/?f=P_1%20%3D%20438%20%2A%2010%20%3D%204380%20cents%20%3D%20%2443.80)
total money saved in 1 year
![Savings = 87.6 - 43.8 = $43.80](https://tex.z-dn.net/?f=Savings%20%3D%2087.6%20-%2043.8%20%3D%20%2443.80)