4 years ago

How is clicking a light switch mechanical energy

1 answer:

5 0

The switches could be defective or worn out or the wires at the switch connections could be loose, causing arcing that is making the noises. There is probably nothing wrong with your basic wiring. ... The safest course is to replace any switch that is making unusual noises such as hissing, crackling and popping

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What gas makes up 75 of earth's atmosphere?

dexar [7]

"Nitrogen gas" makes up 75% (approx. 78%) of the earth's atmosphere

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3 years ago

Baking soda has ______ properties.

Rus_ich [418]

Answer: B

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4 years ago

Which color has the lowest frequency?

Svet_ta [14]

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3 years ago

As you play baseball, you notice that your hand hurts less when you catch the ball by allowing your hand to move a bit. This hap

WINSTONCH [101]

Answer:

I believe the answer is D or B mostly D

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3 years ago

Consider a supersonic missile flying at Mach 2.5 at an altitude of 10 km. Assume that the angle of the shock wave from the nose

NNADVOKAT [17]

Answer:

The distance at which nose of the vehicle will the shock wave impinge upon the ground is approximately 23km

Explanation:

Let

u be Mach angle

M be Mach Number = 2.5

h be altitude = 10km

d be distance between nose of the vehicle with which the shock wave impinge upon the ground

Using;

Sin u = 1/M

u = arcSin (1/M)

u = arcSin (1/2.5) = 23.58°

Using angle at a point rule = 90°

90 - 23.58 = 66.42°

Tan A = opp/adj

Tan 66.42° = d/10

2.2911 * 10 = d

d = 22.911km ≈ 23km

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3 years ago