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Sauron [17]
3 years ago
14

The acceleration of gravity on the moon is 1.6 m/s 2 and on earth it is 9.80 m/s 2. If the weight of a person on earth is 400 N,

then he/she would weigh on the moon.
Chemistry
2 answers:
sveticcg [70]3 years ago
7 0

Answer:

He/She would weigh 65.30 N\\ on the moon.

Explanation:

Weight = (Mass) * (gravity)\\

Considering weight on earth, mass of the object will be

400 = (Mass) x (9.8 \frac{m}{s^2} )\\Mass =  40.81 N\\

Weight on earth

= 40.81 N * 1.6 \frac{m}{s^2}\\= 65.30 N\\

photoshop1234 [79]3 years ago
6 0
I think it might be about 65.31 N on the moon...I've never done this before but what I did was divide 400N by 9.8 to get their mass then multiply the MASS by 1.6 to get the WEIGHT on the moon
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The answer is 3.5 × 10^-3
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The theory of plate tectonics describes the movement of continental plates across the Earth's surface as if they were riding on
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B and E

Explanation:

These two options support the theory of plate tectonics.

3 0
3 years ago
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A 100-w light bulb is about 16% efficient. how many joules of heat energy are siddipated by the bulb each second
pickupchik [31]

Answer:

84 Joules are wasted per second.

Explanation:

An efficiency of 16% means 84% is wasted as heat energy.  

Therefore;

For a 100W bulb;

Heat wasted = 84/100 × 100 W

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Therefore;

84 W or 84 joules are wasted as heat per second

3 0
3 years ago
A solution is prepare using 45.2 g of an unknown (nonelectrolyte) dissolved in 476.4 g of water. The freezing point depression
Ray Of Light [21]

Answer:

94.4g/mol is molar mass of the unknown

Explanation:

Based on the freezing point depression equation:

ΔT = Kf*m*i

<em>Where ΔT is the depression in freezing point (1.87°C)</em>

<em>Kf is freezing point depression constant of water (1.86°Ckg/mol)</em>

<em>And i is Van't Hoff factor (1 for nonelectrolyte solutes)</em>

<em />

Replacing:

1.87°C = 1.86°CKg/mol*m*i

1.005mol/kg solvent = m

Using the mass of the solvent we can find the oles of the nonelectrolyte:

1.005mol/kg solvent * 0.4764kg = 0.479moles

Molar mass is defined as the ratio between mass of a substance in grams and moles, that is:

45.2g / 0.479mol =

<h3>94.4g/mol is molar mass of the unknown</h3>
6 0
2 years ago
The pKa of formic acid is 3.75. At pH of 5.00, _______ .
AlladinOne [14]

The pKa of formic acid is 3.75. At pH of 5.00, b) [formate] > [formic acid].

Formic acid is a weak acid. Thus, together with its conjugate base (formate) they form a buffer system. We can calculate the pH of a buffer system using Henderson-Hasselbach's equation.

pH = pKa + log \frac{[formate]}{[formic\ acid]} \\\\5.00 = 3.75 + log \frac{[formate]}{[formic\ acid]}\\\\\frac{[formate]}{[formic\ acid]}  = 17.8

As expected, at a pH above the pKa, the concentration of formate is higher than that of the formic acid.

The pKa of formic acid is 3.75. At pH of 5.00, b) [formate] > [formic acid].

Learn more: brainly.com/question/22821585

5 0
3 years ago
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