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NemiM [27]
3 years ago
14

Which statement about the physical properties of matter is true? (15)

Physics
1 answer:
Maslowich3 years ago
7 0

Answer:

Psisical properties used to be considered the properties that can be modified by phisical means. New theories state that chemical properties of matter are interrelated to the phisical ones

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3. Magnetite is <br>a) Natural magnet <br>(b)Artificial magnet <br>(c) Not a magnet ​
andrey2020 [161]

\huge \bold \red  {Aɴswᴇʀ}

<em>Magnetite is a Natural magnet</em>

8 0
2 years ago
Read 2 more answers
A good hypothesis must be which of the following
Aneli [31]

Answer:

Testable

Explanation:

A good hypothesis must always be testable.

4 0
3 years ago
A feather is dropped on the moon from the height of 1.4m. The acceleration of gravity on the moon is 1.67ms-1. Determine the tim
Zinaida [17]

1.3s

Explanation:

Given parameters:

Height = 1.4m

Gravity on moon = 1.67ms⁻¹

Unknown:

Time for feather to fall = ?

Solution:

To solve this problem, we are going to use one of the motion equation that relates time, gravity and height.

    H = ut + \frac{1}{2} g t^{2}

Sine the body was dropped from rest, initial velocity is zero;

 H = height

  u = initial velocity

  t = time

  g = acceleration due to gravity

since u = 0;

H = \frac{1}{2} g t^{2}

 1.4 = \frac{1}{2} x 1.67 x t²

  t = 1.3s

learn more:

Gravity brainly.com/question/10934170

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8 0
3 years ago
Which statement best describes the characteristics of white light? A. White light is composed of a spectrum of many different co
kodGreya [7K]
A white light is, by definition, apparently colorless light, for example ordinary daylight. It contains all the wavelengths of the visible spectrum at equal intensity.

so A.
6 0
3 years ago
Dumbo the elephant weights 13,000 pounds. What force would the Earths surface apply to Dumbo? 2.2 pounds = 1 kg
snow_lady [41]

Answer:

57908 N

Explanation:

Let's first convert Dumbo's mass into kg using the given relationship: 2.2 pounds =1 kg.

Then, 13000 lbs = 13000/2.2 kg = 5909 kg

Now, let's find the force of gravity on Dumbo at the surface of the earth, which would be in magnitude equal to the normal force that the Earth's surface applies on Dumbo.

F = m * a = 5909 kg * 9.8 m/s^2 = 57908 N

8 0
3 years ago
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