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3 years ago

12

45. When you park on a level road next to a curb: A. Your wheels must be within 18 inches of the curb B. Your front wheels must

be turned towards the side of the road C. You do not have to set your parking brake

1 answer:

tekilochka [14]3 years ago

4 0

Answer:

A

Explanation:

You must be within 18 inches.

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A water wave has a frequency of 2 Hertz and a wavelength of 5 cm. Calculate it speed

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Answer: 0.1 m/s

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3 years ago

un motor electric efectueaza un lucru mecanic de 864 j in 0.5 min.tensiunea la bornele sale este de 12v si este parcurs de un cu

GrogVix [38]

Answer:

96%

Explanation:

To find the values of the motor efficiency you use the following formula:

$E=\frac{P_o}{P_i}100$

P_o: output power = 864J/0.5min=864J/30s=28.8W

P_i: input power = I*V = (3A)(12V) = 36W

By replacing this values you obtain:

$E=\frac{28.8W}{30W}*100=96\%$

hence, the motor efficiency is about 96%

traslation:

Pentru a găsi valorile eficienței motorului, utilizați următoarea formulă:

P_o: putere de ieșire = 864J / 0.5min = 864J / 30s = 28.8W

P_i: putere de intrare = I * V = (3A) (12V) = 36W

Înlocuind aceste valori obțineți:

prin urmare, eficiența motorului este de aproximativ 96%

3 0

3 years ago