Probably need to see the figure, although a=4x4, b = 3x4, c=5x4 which suggests to me that the figure might be a 3,4,5 right angled triangle ?
Answer:
P_v = 31.2 KPa (abs)
Explanation:
-Cavitation may occur in the converging section of the pipe when the pressure equals the vapor pressure of the fluid i.e water.
- From Table B.2 , In Appendix B for water at 70 C we can look up the vapor pressure of the water to be equal:
P_v @70C = 31.2 KPa (abs)
The correct answer is x-rays
Answer: A cold front occurs when a cold air mass advances into a region occupied by a warm air mass. If the boundary between the cold and warm air masses doesn't move, it is called a stationary front.
Explanation: Two types of occluded front exist: the warm-type and the cold-type. They’re distinguished by the relative temperatures of the air mass ahead of the occlusion – in other words, the air mass ahead of the original warm front – and the air mass behind the cold front. If the air behind the cold front is colder than the air ahead of the occlusion, it shoves beneath that air (because it’s denser) to form a cold-type occluded front. If the air behind the cold front is warmer than the air ahead, it rides over it to form a warm-type occluded front – which appears to be the more common case. In either situation, the lighter warm air representing the air mass originally between the warm and cold fronts sits above the boundary between the two cooler air masses.
Hope this helps!!