3 years ago

Why is an element considered a pure substance?

Physics

1 answer:

anastassius [24]3 years ago

3 0

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

It cannot be broken down into a simpler substance.

You might be interested in

which type of geoscientist interprets data from certain instruments to help detect earthquakes and identify fault lines

Volgvan

<span>Seismologists would be your answer. </span>

7 0

3 years ago

Read 2 more answers

At 9:13AM a car is traveling at 35 miles per hour. Two minutes later, the car istraveling at 85 miles per hour. Prove that are s

andreyandreev [35.5K]

Answer:

There is at least one instant which instantaneous acceleration is equal to average acceleration. $a = 1500\,\frac{km}{h^{2}}$ .

Explanation:

The average acceleration experimented by the car is:

$\bar a = \frac{85\,\frac{km}{h} - 35\,\frac{km}{h} }{\frac{2}{60}\,h }$

$\bar a = 1500\,\frac{km}{h^{2}}$

According to the Rolle's Theorem, there is at least one instant t so that instantaneous acceleration equal to average acceleration for the analyzed interval. That is to say:

$v'(c) = \frac{v(\frac{2}{60} )-v(0)}{\frac{2}{60}-0}$

If car is accelerating at constant rate, instantaneous acceleration coincides with average acceleration for all instant t. Then, instantaneous acceleration is:

$a = 1500\,\frac{km}{h^{2}}$

6 0

3 years ago

Anybody know this answer?

Ber [7]

It seperates naturally

3 0

3 years ago

A 60-V potential different is applied across a parallel combination of a 10-ohm and 20-ohm resistor. What is the current in the

kodGreya [7K]

V=IR
60-V
The current that passes through a 10-ohm resistor = I
I=60/10
6 amperes

3 0