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2 years ago

The sun rose at 6:54 this morning.is this an observation or inference?

Physics

2 answers:

Levart [38]2 years ago

8 0

Answer:

observation

Explanation:

Through an observation information is acquired. The acquiring of information must be through the five senses directly or indirectly. When a person takes an observation using eyes it is a form direct observation. When a person takes an observation using scientific instruments it is a form indirect observation.

Inference is the deduction of observations taken.

Here, the sun rose at 6:54 this morning is an observation i.e., a person saw the sun rise at 6:54. It has not been deduced that the sun rose at 6:54.

jeka57 [31]2 years ago

4 0

Observation: You saw/ observed something and you are stating that.

Inference: You are predicting something to be true. If so and so, then this will occur.

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In which electric circuit would the voltmeter read 10 volts ?

ki77a [65]

Given that,

Voltage = 10 volt

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We need to calculate the equivalent resistance

Using formula of parallel

$\dfrac{1}{R}=\dfrac{1}{R_{1}}+\dfrac{1}{R_{2}}+\dfrac{1}{R_{3}}$

Put the value into the formula

$\dfrac{1}{R}=\dfrac{1}{12}+\dfrac{1}{12}+\dfrac{1}{12}$

$\dfrac{1}{R}=\dfrac{1}{4}$

$R=4\ \Omega$

We need to calculate the current in the circuit

Using ohm's law

$V=IR$

$I=\dfrac{V}{R}$

Where, V = voltage

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Put the value into the formula

$I=\dfrac{10}{4}$

$I=2.5\ A$

Hence, The current in the circuit is 2.5 A

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2 years ago

A sled is accelerating down a hill at a rate of 1 m s2 . If the mass of the sled is suddenly cut in half and the net force on th

mihalych1998 [28]

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2 years ago

When you float an ice cube in water, you notice that 90% of it is submerged beneath the surface. Now suppose you put the same ic

Gwar [14]

Answer:

option (c)

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3 years ago

How does the total amount of energy change as the spring goes up and down?

NeX [460]

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2 years ago

A train of mass 5.6 × 10^5kg is at rest in a station.at time t=0s, a resultant force acts on the train and it starts to accelera

lana66690 [7]

Answer:

420000N

Explanation:

Given parameters:

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Resultant force = ?

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Force = mass x acceleration

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2 years ago