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andrew11 [14]
3 years ago
13

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a

chemical change. Explain your answer.
Physics
2 answers:
yulyashka [42]3 years ago
8 0
<span>This is a chemical change because new substances are formed with different properties and identities</span>
julia-pushkina [17]3 years ago
4 0
This is a chemical change because new substances are formed with different properties and identities. New substances are formed.<span>The properties and identities of the original substances are changed</span>
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A 15-kilogram cart is at rest on a horizontal
Sergio [31]
The most likely answer to this problem would be (1) more mass and more inertia.

A 15-kilogram cart at rest and a 5-kilogram box would make up a 20-kilogram cart and box that is at rest on a horizontal surface. The mass changed into something more, of course, as a result of combining the two object into one and by combining the two objects' mass, the inertia that it previously possessed as a cart by itself was increased when the inertia of the box was also combined to the cart.
6 0
3 years ago
Two children are riding on a merry-go-round that is rotating with a constant angular speed. Abbie is one meter from the center o
Ainat [17]

Answer:

  • <em>Abbie’s acceleration is (1/2) Zak’s acceleration.</em>

Explanation

1. <u>Data</u>:

a) ω = constant

b) Abbie: r₁ = 1 m

c) Zak: r₂ = 2 m

d) Ac₁ = ? Ac₂

2. <u>Formulae</u>

  • Ac = ω² r

3. <u>Solution</u>:

a) Abbie:

  • Ac₁ = ω² r₁  =  ω² (1m)

b) Zack:

  • Ac₂ = ω² r₂  = ω² (2m)

c) Divide Ac₁ / Ac₂

  • Ac₁ / Ac₂ =  ω² (1m) / [ω² (2m) ] = 1/2

⇒      Ac₁ = (1/2) Ac₂ = Ac₂ / 2 = 0.5 Ac₂

5 0
3 years ago
The faster am igneous rock cools the_ the crystal size
HACTEHA [7]
Bigger is the correct answer. the faster an igneous rock cools the bigger the bigger the crystal size will be
7 0
3 years ago
the police department determined that the force required to drag a 130 N(29 lb) car tire across the pavement at a constant veloc
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The force of friction is given by:
f = μR, where μ is the friction coefficient and R is the reaction force, which will be equal to the weight.
100 = μ x 130
μ = 0.77
4 0
3 years ago
Which phrase best describes the time period in which the current body of scientific knowledge was developed? A. Just over the la
LiRa [457]

Answer:

The correct option is;

B. Throughout all of history

Explanation:

A body of knowledge comprises of a given collection of concepts, activities and terms that represents a professional discipline that is outlined by the associated scholarly society, therefore, scientific knowledge, being comprised of very diverse field of knowledge, with different approaches and  changing understanding is taking as a process of learning about the universe data collection, experimenting analysis and communication with a theme of systems, equilibrium, models and constant change which makes the basis of the body of scientific knowledge to be throughout all of history.

3 0
3 years ago
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