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irina [24]
2 years ago
13

A bike travels at 20mph for 5 hours, then 10 mph for 3 hours. What is the average speed?

Physics
1 answer:
d1i1m1o1n [39]2 years ago
5 0

Answer:

10 mph

Explanation:

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Heat makes things expand, so in hot water the ballon will get bigger
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How much time is required for 48.96 C of charge to move through an electric juicer if the current through the juicer is 1.39 A?
OleMash [197]
The relationship between the charge flowing through a conductor, the current flowing through the conductor and the time is:
Q = It
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3 years ago
It takes 4.186 J of energy to raise the temperature of lg of water by 1°C. How fast would a 2 g
mezya [45]

Answer:

1. D - 3.6 x 10^4 J

2. D - 0.04

3. A - 30.3 m/s

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6. C - 7.07 m/s

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5 0
3 years ago
Two tuning forks A and B when sounded together produce 5 beats per second. The tuning fork A has frequency 480Hz. The fork B is
BartSMP [9]
<h2>The frequency of tuning fork B is 475 Hz</h2>

Explanation:

The number of beats produced is equal to the frequency difference between the two tuning forks .

The frequency of A = 480 Hz

Thus the frequency of B can be = 485 or 475 Hz

When B is filed , its frequency increases and it start producing 2 beats with A .

Thus it frequency must be 475 Hz , by filing , it increases to 478 Hz .

By which it gives  480 - 478 = 2 beats per second .

This cannot happen with frequency 485 , because by filing this difference increases in place of decreasing .

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