The guy named Kirby didn't touch the power button on the projector. If he touched means the projector will work fine.
<u>Explanation</u>:
- Kirby touched the gear on the projector. He should check the projector carefully before operating the projector. But he didn't check properly.
- There was a blue rip in the projector. Kirby fails to notice the blue rip. Without minding that he has started the projector. So the tape and the projector is not working well.
- He should fix the blue rip and he should press the start button in the projector. The mistake is he didn't do that. This is the thing that made the projector ripped.
Central Park’s significance was its influence throughout nationwide park architecture. It’s also an iconic landmark of New York and attracts millions of people each year
Answer:B) heat tends to strengthen high-strength steel.
Explanation: You are right it is B
Answer:
The diameter is 50mm
Explanation:
The answer is in two stages. At first the torque (or twisting moment) acting on the shaft and needed to transmit the power needs to be calculated. Then the diameter of the shaft can be obtained using another equation that involves the torque obtained above.
T=(P×60)/(2×pi×N)
T is the Torque
P is the the power to be transmitted by the shaft; 40kW or 40×10³W
pi=3.142
N is the speed of the shaft; 250rpm
T=(40×10³×60)/(2×3.142×250)
T=1527.689Nm
Diameter of a shaft can be obtained from the formula
T=(pi × SS ×d³)/16
Where
SS is the allowable shear stress; 70MPa or 70×10⁶Pa
d is the diameter of the shaft
Making d the subject of the formula
d= cubroot[(T×16)/(pi×SS)]
d=cubroot[(1527.689×16)/(3.142×70×10⁶)]
d=0.04808m or 48.1mm approx 50mm
Actions violated:
- Long hair isn't tied up
- The girl isn't wearing a lab coat
- The girl isn't wearing safety goggles
- Extra: There doesn't seem to be an emergency fire blanket in the safe
Actions to be taken:
- Make sure the girl wears a lab coat or kick her out
- Make sure the girl wears safety goggles or kick her out
- Make sure her hair is tied up or kick her out
Edit: Use these to write your paragraph.
