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ElenaW [278]
3 years ago
12

Every sample of a pure substance has exactly the same composition and the same properties. true or false

Physics
1 answer:
kirill115 [55]3 years ago
7 0
False, that does not apply to some

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If 2.2 lbs = 1.0 kg, and Megan Progress weighs 130 lbs, what is her weight in newtons? W = N (Round your answer to nearest whole
lord [1]

as it is given that

2.2 lbs = 1 kg

here we know that Megan Progress weighs 130 lbs

so its mass in kg is given as

m = 130 * \frac{1}{2.2} = 59.1 kg

now to find the weight in Newton unit we can say

W = mg

W = 59.1* 9.8

W = 579 N

so 130 lbs weighs as 579 N in SI units

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3 years ago
Which component of magma includes mobile ions of silicon?
Lemur [1.5K]

Answer:

Melt.

Explanation:

When rocks melt, they do so slowly and gradually because most rocks are made of several minerals, which all have different melting points; moreover, the physical and chemical relationships controlling the melting are complex. As a rock melts, for example, its volume changes. When enough rock is melted, the small globules of melt link up and soften the rock.

Under normal conditions, mantle rock like peridotite shouldn't melt in the Earth's upper mantle. However, by adding water you can lower the melting point of the rock. Alternatively, by decompressing the rock, you can bring it to a pressure where the melting point is lower. In both cases, basalt magma will form and considering it is hotter and less dense than the surrounding rock, it will percolate towards the surface and some of that erupts.

6 0
3 years ago
How long would a simple pendulum need to be to have a period of 1. 0s.
Archy [21]

Answer:

0.248 m

Explanation:

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2 years ago
If the mass of an object on earth is 40 kilograms it’s mass on the moon is
g100num [7]
Speaking bout mass,
it's mass is still 40Kg on the moon

but it's Weight on the moon is 1/6mg
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What detects the original stimulus ?
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Wherever the change in the body happened will detect the stimuli and send the signals to the brain and Spinal does
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