3 years ago

Please need help with number 1

Chemistry

1 answer:

Pavlova-9 [17]3 years ago

6 0

One of them is Neatness

You might be interested in

Helpthe last option is class M

levacccp [35]

B.
I think hopefully

6 0

3 years ago

Read 2 more answers

What is a radioactive tracer? Give an example of how one might be used.

Norma-Jean [14]

Uses for radioactive tracers is to look for flaws in metal objects and are also used by doctors to x-ray images to look at your bones.

3 0

4 years ago

Hormones taken as medicine can harm fish when the hormones end up in waterways. What does this show about the impact of chemical

iragen [17]

The answer to this is C.

3 0

3 years ago

An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is

Nimfa-mama [501]

The focal length of the mirror is 15 cm

From the question given above, the following data were obtained:

Object distance (u) = 30 cm

Image distance (v) = 30 cm

<h3>Focal length (f) =? </h3>

The focal length of the mirror can be obtained as follow:

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u} \\\\\frac{1}{f} = \frac{1}{30} + \frac{1}{30}\\\\\frac{1}{f} = \frac{2}{30} \\\\\frac{1}{f} = \frac{1}{15} \\\\$

<h3>Invert </h3><h3>f = 15 cm</h3>

Therefore, the focal length of the mirror is 15 cm

Learn more: brainly.com/question/1392083

3 0

3 years ago

Type the correct answer in the box. Spell all words correctly. In which system are both energy and matter exchanged with the sur

Anna11 [10]

Answer:

open system

Explanation:

An open system is a system in which both energy and matter are exchanged with the surroundings.

4 0

3 years ago