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stellarik [79]
2 years ago
15

3. A woman drove her car from home to her daughter's school. The odometre on her dashboard says she travelled 4.5 km to do this.

She then immediately drove back home, using a different route, which was 5.5 km long. The whole journey took 30 minutes.
a. What distance did she travel?

b. What was her displacement?

C. What was her average speed during the journey?
Physics
1 answer:
11111nata11111 [884]2 years ago
5 0

Answer:

Look Below -->

Explanation:

a. She traveled 10 km, add 4.5 km + 5.5 km = 10 km (Distance is the total units travelled, so just add them all up :) )

b. Her displacement is  0 km because she went back home. (Displacement is the difference between the end and starting points)

c. 3 km/hr (30 minutes / 10 km)

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We can solve this through trigonometry.

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α =  = 34.6°

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A 2.3 m long wire weighing 0.075 N/m is suspended directly above an infinitely straight wire. The top wire carries a current of
ZanzabumX [31]

Answer:

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=  10⁻⁷ x \frac{2\times49}{r} x 33 x 1

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ruslelena [56]

Answer:

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We can use,

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