How are changes in matter related to changes in energy

Answers

Answer 1

Answer: The ability to do work or cause change.
Every chemical and physical change in matter includes a change in energy.
Energy is conserved in a chemical change.
Energy is never created or destroyed.
Energy is only transformed from one form to another.

Answer 2

Answer: If the state of matter is a solid and transforms into a liquid,then the energy level is increased and if it is going from a liquid to a solid the energy level is decreased

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a cannon ball is fired at 40 degrees with an initial velocity of 180 m/s. what is the maximum height reached by the cannonball?
The power in an electrical circuit is given by the equation P= RR, where /isthe current flowing through the circuit and Ris the resistance of the circuit.What is the power in a circuit that has a current of 12 amps and a resistanceof 100 ohms?A. 144 wattsB. 8.3 wattsc. 1200 wattsD. 14,400 watts

Can magnets pick up all kinds of materials?

Answers

Well it depends it has to be some kind of metal material if not then it will not pick it up Hope this helps:)

Calculate the volume of 1280 kilograms of aluminium if the density of aluminium is 2700 kg/m³. Give your answer to 2 decimal places.

Answers

Answer:

The correct answer is 0.47 m³

Explanation:

The formula for density (d) is

Mass (m) ÷ volume (v)

Hence

d = m ÷ v

The density of aluminium (as provided in the question) is 2700 kg/m³ and the mass of aluminium is 1280 kg, the volume is however unknown.

Thus, from the formula earlier

2700 = 1280 ÷ v

v = 1280 ÷ 2700

v = 0.47 m³

The volume of aluminium when the density is 2700 kg/m³ and the mass is 1280 kg is 0.47 m³

Answer:

volume = 0.47 $m^(3)$ .

Explanation:

Density:

$d = (m)/(v)$

We have that d = 2700 kg/ $m^(3)$ and that we have 1280 kg of Al.

$2700 = (1280)/(V)$

V = 0.47 $m^(3)$

Aluminum, carbon, and calcium are examples of what type of matter?Solution
Heterogeneous mixture
Element
Compound

Answers

Element would be it man

2 PointsWhich of the following statements are not true about gravity? Check all that
apply.
A. Gravity exists only on Earth.
O
B. Gravity exists between two objects that have mass.
O
C. Gravity is a force that pulls two objects together.
D. Gravity exists in the whole universe.
E. Gravity doesn't exist between Earth and the sun.

Answers

the answers are A and E!

A student has the following equipment - copper wire, nail made of iron,a battery, paperclips.How can he make an electromagnet and use it to separate a mixture of small pieces of copper and iron?

please help

Answers

The first step would be to create an electromagnet. You can create an electromagnet by winding a copper wire around the nail, the connect both ends to the battery. A current would start flowing around the nail through the wire, creating an electromagnet with its own magnetic field. Next, bringing the electromagnet to the mixture of copper and iron would slowly attract the pieces of iron (as copper is weakly magnetic). Do this slowly and the iron pieces would all slowly be separated from the copper pieces.

The method of heat transfer by which the sun warms the earth is

Answers

Heat from the Earth's core and radiation from the Sun is transferred to the surface of the Earth by conduction. Contact of the atmosphere with these warm surfaces transfers thermal energy, which then heats up the rest of the air through convection.

Conduction and convection both require some kind of material stuff
between the heat source and the object being heated.

Since there's no material stuff in the space between the sun and the
Earth, conduction and convection can't do it, and the only way for the
sun's energy to reach the Earth is by radiation.

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Decision making is part of