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Scorpion4ik [409]

3 years ago

7

PLEASE PLEASE PLEASE HELPPP

1 answer:

Ivan3 years ago

8 0

I believe that the answer is B

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Explanation:

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2 years ago

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What type(s) of intermolecular forces are expected between nocl molecules?

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3 years ago

Which of the following is the correct calculation for determining the density of an object with a mass of 54 g and a volume of 6

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Answer:

$\rho =9g/mL$

Explanation:

Hello,

In this case, since the density is computed via the division of the mass by the volume:

$\rho =\frac{m}{V}$

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$\rho =\frac{54g}{6mL}\\ \\\rho =9g/mL$

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2 years ago

What happens to the energy absorbed during an endothermic reaction

LuckyWell [14K]

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1 year ago

(Numerical problems) A car is running with the velocity of 72km/h. What will be it's velocity after 5s if it's acceleration is -

kodGreya [7K]

The car's velocity after 5s : 10 m/s

<h3>Further explanation</h3>

Given

velocity=v=72 km/h=20 m/s

time=t = 5 s

acceleration=a = -2 m/s²

Required

velocity after 5s

Solution

Straight motion changes with constant acceleration

$\tt v_f=v_i+at$

vf=final velocity

vi = initial velocity

Input the value :

$\tt v_f=20+(-2).5\\\\v_f=20-10\\\\v_f=10~m/s$

The car is decelerating (acceleration is negative) so that its speed decreases

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