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sattari [20]
2 years ago
12

What describes how much matter is in a object??

Physics
1 answer:
ArbitrLikvidat [17]2 years ago
8 0
Mass and weight are two different things. The unit for mass is a gram. A nickel has the mass of about one gram. Objects<span> that take up space and have mass are called </span>matter<span>.</span>
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Would you expect the bonds in ammonia to be polar covalent?
azamat
Yes I would expect them too
8 0
3 years ago
A shaving or makeup mirror is designed to magnify your face by a factor of 1.40 when your face is placed 20.0cm in front of it
Dennis_Churaev [7]

Answer:

(a) convex mirror

(b) virtual and magnified

(c) 23.3 cm

Explanation:

The having mirror is convex mirror.

distance of object, u = - 20 cm

magnification, m = 1.4

(a) As the image is magnified and virtual , so the mirror is convex in nature.

(b) The image is virtual and magnified.

(c) Let the distance of image is v.

Use the formula of magnification.

m =-\frac{v}{u}\\1.4=-\frac{v}{-20}\\v =28 cm

Use the mirror equation, let the focal length is f.

\frac{1}{f}=\frac{1}{v}+\frac{1}{u}\\\frac{1}{f}=\frac{1}{28}+\frac{1}{20}\\\frac{1}{f}=\frac{28+20}{560}\\f=11.67cm

Radius of curvature, R = 2 f = 2 x 11.67 = 23.3 cm

5 0
3 years ago
Que es electromagnetico?
adoni [48]
Se llaman cuerpos eléctricos.
3 0
3 years ago
Sarah wants to install a wind turbine on her farm, which would convert wind energy to electricity to power her home. She can onl
Marina86 [1]

Answer:

The best choice would be c

Explanation: Sarah wants this wind turbine to efficient since she can only get one. C has the most reasonable option data collected will help her know the best wind speed over her farm.

6 0
2 years ago
Read 2 more answers
Prove that s=ut+½at²​
katrin2010 [14]

Explanation:

Distance travelled = Area under the line

= ut + ½ (v-u)t

Acceleration (a) = (v-u)/t and so (v-u) = at

Therefore,

Distance travelled (s) = ut + ½ (v-u)t = ut + ½ (at)t = ut + ½ at²

Thus,proved.

3 0
2 years ago
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