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notka56 [123]
1 year ago
12

Solving:

Physics
1 answer:
STatiana [176]1 year ago
5 0

Answer:

1. 31,536,000 seconds

2. Car B traveled a longer distance

3. Volume of box = 0.235887 cubic meters

Explanation:

Q1. Age in seconds

1 year = 365 days
1 day = 24 hours
1 hour = 60 minutes
1 minute = 60 seconds

Therefore 1 year = 365 x 24 x 60 x 60 = 31,536,000 seconds

In scientific notation this would be 3.1536\times  10^7 \text{ seconds}

Q2. Comparing km and miles

Given:
1 km = 1000m and 1 m = 3.3ft,   I km = 1000 x 3.3 = 3300 ft.

Convert Car A distance of 25.7km to feet :
25.7 km. = 25. 7 x 3300 ft. = 84,810 ft.

For Car B  that traveled 20 miles,
20 miles = 20 x 5280 = 105,600 ft.

Since 105,600 > 84,810, car B traveled a longer distance

Q3. Volume of wooden box

The wooden box is in the shape of a rectangular prism
It volume is L x W x H
Volume = 1.525 x 0.30 x 0.5156 = 0.235887 cubic meters

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Answer:

Part a)

V' = 7.77 Volts

Part b)

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Explanation:

As we know that capacitor plate is connected across 2.1 V and after charging it is disconnected from the battery

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So we will have

Q = kC(2.1)

now dielectric is removed between the plates of capacitor

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V' = \frac{Q}{C'}

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Part b)

Now the capacitor plates are again isolated and unknown dielectric is inserted between the plates

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V" = \frac{Q}{k'C}

0.59 V = \frac{kCV}{k'C}

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3 years ago
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Explanation:

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5.

12 V = 4.2 A × resistance

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Julie is cycling at a speed of 3.4 meters/second. If the combined mass of the bicycle and Julie is 30 kilograms, what is the kin
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