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irina [24]
3 years ago
8

Ann drove to the store 10 km north of her house and then drove to the library, which is 5 km south of the store. She drove a tot

al distance of 15 km. What was Ann's displacement? O A. 15 km south OB. 5 km north C. 5 km south D. 15 km north SUBMIT​
Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

C = 5km North

Explanation:

d = 10 - 5 = 5km

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3 years ago
Mass defect is associated with:
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Answer:

B. Nuclear fission

Explanation:

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3 years ago
A gas has a volume of 490. mL at a temperature of -35.0 degrees C. What volume would the gas occupy at 42.0 degrees Celsius? Ple
miskamm [114]

Answer:

648.5 mL

Explanation:

Here we will assume that the pressure of the gas is constant, since it is not given or specified.

Therefore, we can use Charle's law, which states that:

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Mathematically:

\frac{V}{T}=const.

where

V is the volume of the gas

T is its absolute temperature

The equation can be rewritten as

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where in this problem we have:

V_1=490 mL is the initial volume of the gas

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T_2=42.0^{\circ}+273=315 K is the final temperature

Solving for V2, we find the final volume of the gas:

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8 0
4 years ago
This exercise uses the radioactive decay model.
Anna11 [10]
For radioactive decay, we can relate current amount, initial amount, decay constant and time using:
N = No x exp(-λt)

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λ = ln(2) / 5730
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3 0
3 years ago
Pls can someone help me
BaLLatris [955]

Answer:

Explanation:

B

3 0
3 years ago
Read 2 more answers
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