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ipn [44]
4 years ago
5

How much work is done by a 32 N force pushing a pencil 0.43 m? a 32 J b 14 J c 32 J d 74 J

Physics
1 answer:
Taya2010 [7]4 years ago
3 0
The exact answer is 13.76 J so the closest answer is B 
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What is the process of preparing a person to perform strenuous work and to recover from that work as quickly as possible?
vesna_86 [32]
The process of preparing a person to perform strenuous work and to recover from that work as quickly as possible is called training, I bet. Such w<span>arm up exercises as  like stretching and other should lead person to the recovery. Hope it will help.</span>
3 0
4 years ago
A convex lens has a focal length of 16.5 cm. Where on the lens axis should an object be placed in order to get a virtual, enlarg
alexandr402 [8]

Answer:

Object should be placed at a distance, u = 7.8 cm

Given:

focal length of convex lens, F = 16.5 cm

magnification, m = 1.90

Solution:

Magnification of lens, m = -\frac{v}{u}

where

u = object distance

v = image distance

Now,

1.90 = \frac{v}{u}

v = - 1.90u

To calculate the object distance, u by lens maker formula given by:

\frac{1}{F} = \frac{1}{u}+ \frac{1}{v}

\frac{1}{16.5} = \frac{1}{u}+ \frac{1}{- 1.90u}

\frac{1}{16.5} = \frac{1.90 - 1}{1.90u}

\frac{1}{16.5} = \frac{ 0.90}{1.90u}

u = 7.8 cm

Object should be placed at a distance of 7.8 cm on the axis of the lens to get virtual and enlarged image.

6 0
4 years ago
I have a problem in the questions
Taya2010 [7]
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5 0
3 years ago
Which example is NOT a part of the electromagnetic spectrum?
soldier1979 [14.2K]
Electricity is not apart of it
3 0
3 years ago
Why do we use other bonding theories in addition to the lewis model?
Setler [38]

Full Question:

Why do we use other bonding theories in addition to the lewis model?

a) Lewis model is not suitable for all molecules or ions. b) Lewis model cannot predict all of the properties of a molecule or ion. c) Lewis model is too complicated.

Answer:

b) Lewis model cannot predict all of the properties of a molecule or ion.

Explanation:

Lewis structures, also called electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.

Lweis  model does not explain the geometry of molecules, how the bonds form, or how the electrons are shared between the atoms hence the need to use other bonding theories.

8 0
4 years ago
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