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3 years ago

11

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

al change

1 answer:

sesenic [268]3 years ago

7 0

Its a chemical change.

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Which of these is a part of the biosphere? a. wind b. lakes c. bacteria d. glaciers

Aleks [24]

B. lakes is a part of the biosphere
Biosphere is defined as "<span>the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms." and a lake is the only thing on the list that could be occupied by a living thing.</span>

4 0

3 years ago

Read 2 more answers

If the coefficient of static friction between the coffee cup and the roof of the car is 0.20, what is the maximum acceleration t

kolezko [41]

Answer:

a = 1.962 m/s²

Explanation:

The frictional force applied on the car can be given by the following formula:

$friction = f = \mu R\\$

where,

f = frictional force = ma (according to Newton's Second Law)

μ = coefficient of friction = 0.2

R = Normal Reaction = Weight of car = mg

Therefore, equation becomes:

$ma = \mu mg\\a = \mu g\\$

where,

a = maximum acceleration = ?

μ = coefficient of friction = 0.2

g = acceleration due to gravity = 9.81 m/s²

Therefore,

$a = (0.2)(9.81\ m/s^{2})\\$

<u>a = 1.962 m/s²</u>

8 0

3 years ago

What part of the plant cell is responsible for making its food?

ArbitrLikvidat [17]

It is a part of the sugary liquid in the plant that uses photosynthesis to produce.

4 0

4 years ago

Define are sources of energy

OleMash [197]

$\boxed{\sf{QUESTION:}}$

Define sources of energy

$\boxed{\sf{ANSWER:}}$

Energy is the capacity of a body to do work.

We Classify the sources of energy on the basis of:

<u>Occurence:</u>

Natural Sources: Natural energy sources are those which are made available to us by nature. Solar energy, wind energy, energy from water (hydro energy) are some of such natural sources of Energy.
Synthetic Sources: Synthetic energy are those that use man-made materials as sources of energy. Fir example, chemical energy, stored in the batteries, (used in calculators, watches, etc.) is a synthetic source of energy.

<u>Physical</u><u> </u><u>State:</u>

Solid: Firewood, Charcoal, coal are examples of solid fuels.
Liquid: Kerosene, Petrol & diesel are all liquid fuels.
Gas: Petroleum gas, commonly used as LPG (Liquified Petroleum Gas), & natural gas, also used CNG (Compressed Natural Gas), are examples of gaseous fuels

<u>Availability</u><u>:</u>

Renewable: A renewable source of energy is a natural resource that can replenish itself naturally over a short period of time. Wind, sun, biomass (from plants) & hydropower (from water) are all renewable sources of energy. These arr inexhaustible natural resources.
Non-renewable: Energy sources which get us & cannot be replaced or replenished in a short period of time are called non-renewable sources of energy. These are also called exhaustible natural resources. Fossil fuels, (like petroleum, natural gas & coal), are non-renewable sources of energy.

<h2>Hope It's Helped! :D</h2>

6 0

3 years ago

When two point charges are a distance d part, the electric force that each one feels from the other has magnitude F. In order to

Contact [7]

Answer:

Because the force is inversely proportional to the square of the distance

Explanation:

The magnitude of the electrostatic force between two charged particles is given by

$F=k\frac{q_1 q_2}{d^2}$

where

k is the Coulomb's constant

q1, q2 are the magnitudes of the two charges

d is the distance between the two charges

We observe that the magnitude of the force is inversely proportional to the square of the distance.

Therefore, when the distance changes to

$d'=\frac{d}{\sqrt{2}}$

The force will double:

$F'=k\frac{q_1 q_2}{(d/\sqrt{2})^2}=2(k\frac{q_1 q_2}{d^2})=2F$

5 0

4 years ago