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2 years ago

1. Explain what it means when we say a substance is magnetic. (HINT: Be sure to mention the role of the Electrons)

1 answer:

6 0

1. Something that is magnetic has magnetic fields. The fields start at the North Pole and go around the magnet, and terminate at the south pole of the magnet. All magnetic substances have north and south poles.
2. An electric field is the area that surrounds an electric charge an magnetic field is the are of the force around the magnetic poles it is induced by emf.

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Helium is the___

s344n2d4d5 [400]

Answer:

the answer is B-2nd; stars

Explanation:

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3 years ago

According to the oxygen-hemoglobin dissociation curve, PO2 in the lungs of 100 mm Hg results in Hb being 98% saturated. At high

Ad libitum [116K]

Answer:

Hb would be 78.4% saturated.

Explanation:

This problem can be solved by using simple unitary method.

At 100 mm Hg pressure of oxygen, Hb is saturated by 98%

So, at 1 mm Hg pressure of oxygen, Hb is saturated by $\frac{98}{100}$ %

Hence, at 80 mm Hg pressure of oxygen, Hb is saturated by $\frac{98\times 80}{100}$ % or 78.4%

Therefore, at 80 mm Hg pressure of oxygen in the lungs, Hb would be 78.4% saturated.

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3 years ago

Helpp plsss

shtirl [24]

Answer:

kinetic

Explanation:

kinetic energy is the energy possessed by a body due to its motion.

3 0

2 years ago

Read 2 more answers

Because of friction, some work is always changed into

Arturiano [62]

Answer:

Thermal Energy

Explanation:

I'll give you an example, Rub your hands together. Then touch your face or leg to feel any temperature change. Most likely your hands are warmer.

8 0

2 years ago

Read 2 more answers

Calculate the moles and grams of solute in 2.0 L of 0.30M Na SO..

Ostrovityanka [42]

Answer:

Number of moles of solute = 0.6 mole

Mass =13.8 g

Explanation:

Given data:

Number of moles of sodium = ?

Volume = 2.0 L

Molarity = 0.30 M

Mass in gram of sodium= ?

Solution:

Number of moles:

Molarity = number of moles of solute / volume in litter

Number of moles of solute = Molarity × volume in litter

Number of moles of solute = 0.30 M × 2.0 L

Number of moles of solute = 0.6 mole

Mass in gram:

Mass = Number of moles × molar mass

Mass = 0.6 mole× 23 g/mol

Mass =13.8 g

3 0

3 years ago