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musickatia [10]
3 years ago
5

Which of the following statements about convection is true? A Convection can only occur during the process of boiling B Convecti

on always involves the circulation of a liquid or gas C All types of currents are convection currents D Convection occurs between solids only at high temperatures
Physics
1 answer:
Ivan3 years ago
6 0
The answer to your question is OPTION D
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two ice skaters push each other, and move in opposite directions. the mass of one is 75 kg, and his speed is 2 m/s. if the mass
sattari [20]

momentum conservation

75x2 = 30 x her speed

75x2/30=150/30=5m/s

7 0
3 years ago
Rod A and rod B are cylindrical rods made of the same metal. amd they differ only in size. Rod B has double the length and doubl
Mice21 [21]

Answer:

it would take rod B twice as much time

Explanation:

it would take rod B twice as much time as it is twice as thick and twice as long. Due to this reason it would take the electric charge not only more time but even more voltage to travel through the rod

5 0
3 years ago
Which substances in the simulation have particles that are only atoms?
Travka [436]

All matter is made of particles; these can be single atoms or atoms chemically joined to make molecules. Using this fact, matter can be classified into three broad groups: elements, compounds and mixtures. In an element, all the atoms are of the same type. If more than one type of atom is chemically joined, then a compound has been formed. If more than one type of atom or molecule is contained in the same substance, and the particles aren't chemically joined, this is a mixture.

7 0
3 years ago
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Which best describes electrical energy? a. energy released by a chemical reaction b. energy produced by flow of electric charge
inessss [21]
<span> energy produced by flow of electric charge describes a electrical energy
because movement of electric charge do effect the work on system 
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4 0
3 years ago
Read 2 more answers
Which of the following is a TRUE
DENIUS [597]

The statement that is the most true regarding the states of matter is the first statement.

A. Most matter on Earth exists as a solid, liquid, or gas.

This is correct since most of the matter on Earth exists in those 3 states, meanwhile plasma is not a state that most of matter on earth is found in since it is mostly associated to stars and the external galactic regions.

Therefore, B is incorrect.

C is false, since almost of all of the matter on earth can transform and change through each of the 3 states of matter, solid, liquid, and gas.

D is false since most of the matter in universe is actually made out of plasma instead of a liquid. In fact, over 99% of the known universe's matter is said to consist of plasma.

7 0
3 years ago
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