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yaroslaw [1]
4 years ago
8

Suppose you increase your walking speed from 4 m/s to 13 m/s in a period of 1 s. What is your acceleration? m/s2

Chemistry
1 answer:
777dan777 [17]4 years ago
4 0
Well the formula for a is a= { vf- vi} ÷ t
where vf is final velocity vi is initial velocity and t is time
thus substituting in the equation you get
a= {13-4} ÷ 1
= 9 m/s2 in the direction of Motion(acceleration is a vector)
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Classify the reaction that makes a firefly glow in terms of energy input and output
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4 0
3 years ago
The following equation shows the correct molecules formed in the reaction, but the products are incorrect. CH4 +202=H20+ CO2 How
Hunter-Best [27]
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5 0
3 years ago
How much energy in joules is released when 18.5 grams of copper cools from 285 °C<br> down to 45 °C
nadya68 [22]

Answer: 1709.4 Joules

Explanation:

The quantity of Heat Energy (Q) released on cooling a heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since Q = ?

M = 18.5 grams

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Φ = 285°C - 45°C = 240°C

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Q = 18.5grams x 0.385 J/g.C x 240°C

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Thus, 1709.4 Joules is released when copper is cooled.

5 0
3 years ago
Write down moleculer formula:
Temka [501]
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2.Ca(HCOO)2
3. Ca(OH)2
4.NaOH
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10.H2SO4
11.NH3
12.(NH4)3PO4
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:)
5 0
3 years ago
Read 2 more answers
(First to answer gets some good) Order the following components of the universe from largest to smallest: Moon, planet,universe,
cluponka [151]

Answer:

Universe, galaxy, solar system, star, planet, moon and asteroid.

Explanation:

You're welcome!

7 0
3 years ago
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