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3 years ago

When we give the speed of a car what frame of reference are we using?

Physics

2 answers:

Ilia_Sergeevich [38]3 years ago

6 0

Answer:

fixed frame of reference on Earth

Explanation:

When speaking in daily life or in a written problem, in general we assume a fixed frame of reference on Earth, so that the speeds of objects are referred to Earth.

In some cases we talk about other frames of reference, but these are explicitly written.

It should be mentioned that all the reference frames are inertial, that is, with zero acceleration, in order to comply with Newton's second law

Rus_ich [418]3 years ago

4 0

Frame of reference, in simplest terms, describes the state of motion of the observer. The frame of reference may also be described by using a set of coordinates, time and motion. We formulate all our equations and solve them using the frame of reference.

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Do people use uranium for anything?

kati45 [8]

Answer:

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Explanation:

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3 years ago

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What tells you how far/how tall/how long something is? *The answer is 6-letters and the second letter is a "e" and the fifth let

rosijanka [135]

Length is the answer because it's six letters

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4 years ago

An element’s atomic number is 35. how many portions would an atom this element have

kotykmax [81]

35 protons are present in an element whose atomic number is 35.

<u>Explanation: </u>

In an atom of an element, the number of protons = atomic number

Number of protons = number of electrons

Mass Number = number of protons + number of neutrons

Hence, an atom with atomic number 35 will have 35 protons.

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3 years ago

A car travelling at 10 m/s accelerates at 3 m/s^2 for 6 seconds. What is the final velocity of the car?

tankabanditka [31]

Answer:28m/s

Explanation:I got one point so yeah hope this help

7 0

3 years ago

An ideal transformer has 60 turns in its primary coil and 360 turns in its secondary coil. If the input rms voltage for the 60-t

notka56 [123]

Answer:

720 V

Explanation:

Given that,

The number of turns in primary coil, N₁ = 60

The number of turns in secondary coil, N₂ = 360

The input rms voltage, V₁ = 120 V

We need to find the output rms voltage of the secondary coil . The relation between number of turns in primary coil - secondary coil to the input rms voltage to the output rms voltage is given by :

$\dfrac{N_1}{N_2}=\dfrac{V_1}{V_2}\\\\V_2=\dfrac{N_2V_1}{N_2}\\\\V_2=\dfrac{360\times 120}{60}\\\\V_2=720\ V$

<h3>So, the output rms voltage of the secondary coil is 720 V. Hence, the correct option is (b).</h3>

7 0

3 years ago