3 years ago

Describe the role of observations in scientific endeavor and explain the characteristics of good observations.

1 answer:

3 0

Observations are used in order to collect data and record a variety of interesting or useful key points about the subject or specimen in observation. These observations, if made well, can be recorded and used to supplement a hypothesis.

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1.5 Amp is rated for 5 W so it would not be possible

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Which of the following statements about geothermal energy is not true?

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4 years ago

Suppose a certain battery has an internal emf of 9.00 V but the potential difference across its terminals is only 80.0 % of that

Rudiy27

Answer:

$1140.48\times 10^{-6}J$

Explanation:

We have given that the battery has an internal emf of 9 volt

So E = 9 volt

Capacitance $C=44\mu F=44\times 10^{-6}F$

It is given that on the terminal voltage is only 80% of potential difference

So V = 0.8×9 = 7.2 volt

We know that energy stored in the capacitor is given by

$E=\frac{1}{2}CV^2=\frac{1}{2}\times 44\times 10^{-6}\times 7.2^2=1140.48\times 10^{-6}J$

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3 years ago

A stone is thrown horizontally at 30m/s from a tall cliff.

Jobisdone [24]

x(2) = 30(2) = 60 m

y(2) = ½(-9.8)2² = -19.6 m

x(4) = 30(4) = 120 m

y(4) = ½(-9.8)4² = -78.4 m

x(6) = 30(6) = 180 m

y(6) = ½(-9.8)6² = -176.4 m

x(8) = 30(8) = 240 m

y(8) = ½(-9.8)8² = -313.6 m

x(10) = 30(10) = 300 m

y(10) = ½(-9.8)10² = -490 m

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