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Mashcka [7]
3 years ago
8

Why did the ice melt so quick science method pls help ‍♀️‍♀️

Physics
1 answer:
blagie [28]3 years ago
6 0

Answer:

Bcuz when solid is near heat it changes to liquid this is called physical change

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The distance between two electric pole is 800m then express this in terms of mm​
Lana71 [14]

Answer:

Mm stands for milimetres

Explanation:

6 0
3 years ago
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A train at rest emits a sound at a frequency of 1057 Hz. An observer in a car travels away from the sound source at a speed of 2
il63 [147K]

Answer:

993.52 Hz

Explanation:

The frequency of sound emitted by the stationery train is 1057 Hz.

The car travels away from the train at 20.6 m/s.

The frequency the observer hears is given by the formula:

f_o = \frac{v - v_o}{v}f

where v = velocity of sound = 343 m/s

vo = velocity of observer

f = frequency from source

This phenomenon is known as Doppler's effect.

Therefore:

f_o = \frac{343 - 20.6}{343} * 1057\\ \\f_o = 322.4 / 343 * 1057\\\\f_o = 993.52 Hz

The frequency heard by the observer is 993.52 Hz.

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3 years ago
A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?
Kobotan [32]

Answer:

freq= 200/50= 4 Hz

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3 0
3 years ago
Pls help will give brainliest
max2010maxim [7]

Explanation:

the correct answer is Option 5.√½gh.

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5 0
2 years ago
Define parallax as it relates to stars and explain how it can be used to determine stellar distances.
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Astronomers can measure a star's position once, and then again 6 months later and calculate the apparent change in position. The star's apparent motion is called stellar parallax. The distance d is measured in parsecs and the parallax angle p is measured in arcseconds.

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