2 years ago

A____change occurs when a substance changes phase a.)physical b.)chemical c.)nuclear

Physics

1 answer:

Vera_Pavlovna [14]2 years ago

7 0

It is definitely B chemical

You might be interested in

What is formed from at least two types of chemically combined atoms?

SashulF [63]

A compound. For example, hydrogen and oxygen atoms form water.

7 0

3 years ago

two-point charges are 10.0 cm apart and have charges of 2.0 uc and -2.0uc respectively What is the magnitude of the electrical f

Scorpion4ik [409]

Answer:

Electric field due to two charges is given as

$E = 1.44 \times 10^7 N/C$

Explanation:

As we know that two charges are opposite in nature

So the electric field at the mid point of two charges will add together

so the net field is given as

$E = 2\frac{kq}{r^2}$

now we have

$q = 2\times 10^{-6} C$

$r = 5 cm = 0.05 m$

now we have

$E = 2\frac{(9\times 10^9)(2\times 10^{-6})}{0.05^2}$

$E = 1.44 \times 10^7 N/C$

6 0

3 years ago

The Burj Khalifa is the tallest building in the world at 828 m. How much work would a man with a weight of 700 N do if he climbe

Hoochie [10]

Answer:

579600J

Explanation:

Given parameters:

Height of the building = 828m

Weight of the man = 700N

Unknown:

Work done by the man = ?

Solution:

The work done by the man is the same as the potential energy expended.

Work done:

Work done = Weight x height = 700 x 828

Work done = 579600J

6 0

2 years ago

Miswer

quester [9]

Answer: 4.0

Explanation:

5 0

2 years ago

How are problems best solved by scientists?

spin [16.1K]

One scientist proposes an idea and other scientists repeat his or her experiments so they can Accept the Idea.

3 0

3 years ago

Read 2 more answers