Which statements correctly defend or dispute his conclusion?
Henry mixed salt and water together in a cup until he
observed a clear solution. He measured the mass of
the solution. Then he placed the cup outside for
several sunny days during the summer. After a week,
he observed that only solid salt remained in the cup
and the mass had decreased. Henry concluded that a
physical and chemical change occurred in this
investigation
He is correct. Dissolving salt in water is a physical
change, but evaporating the water is a chemical
change Formation of a solid is evidence that a
chemical change occurred.
He is correct Evaporation is a physical change, but
dissolving salt in water is a chemical change The
change in mass is evidence that a chemical change
occurred
He is incorrect. Dissolving salt in water and
evaporation of the water are both physical changes.
The reappearance of salt is evidence that the
change was reversible by a physical change, so it
could not be a chemical change.
O He is incorrect. Dissolving salt in water and
evaporation of the water are both chemical
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electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

high-sugar diet and high cholesterol

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min