Answer:
C. Both Technicians A and B
Explanation:
To loosen a fastener immediately especially if it is a rusted one we can follow these steps.
1. Tap the sides of the fastener so that the rust particle fall off.
2. These rust particles can be brushed off.
3. Spray the fastener with the penetrating oil.
4. Again tap the sides with a hammer to let the oil penetrate the inter-locked parts (threads in case of a nut and bolt).
5. Loosen the fastener after oil has penetrated.
Note: It should be kept in consideration that spraying alone won't do the job, tapping is essential to let the oil penetrate deep in to free the rusted parts.
Answer:
4320cm
Explanation:
(length of the arc)/(length of the radius)=central angle
lengthof the arc/20=216
lengthof the arc=216×20
length of the arc=4320cm
hope this helps, let me know if I'm right!
Answer:
The energy stored in a body due to either it's position or change in shape is called gravitational potential energy.
In order to find acceleration, you must do change in speed divided by the time taken. In this case, the car starts from rest which is 0m/s and reaches 20m/s which is a difference of 20m/s in speed. The time taken was 10 seconds so you do 20m/s ÷ 10 = 2m/s²
Your answer would be B. Hope this helps!