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Setler79 [48]
2 years ago
7

A concave lens can only form a. A. real image. B. reversed image. C. virtual image. D. magnified image.

Physics
1 answer:
skad [1K]2 years ago
4 0
A concave lens can only form a:

<span>C. virtual image. </span>
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Can someone define 'work' for me please? I looked it up but there are a lot of different answers.
vekshin1

Answer:

Work- Activity involving mental or physical effort done in order to achieve a purpose or result.

Explanation:

This was the first definition from the dictionary on google :)

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2 years ago
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Which device uses a rotating electric power source to produce a magnetic field?
faltersainse [42]

Answer:

A. a motor

Explanation:

A motor is an electrical device or machine that converts electrical energy into mechanical energy. That is, a motor takes electrical energy to produce motion. There are different types of motors such as DC motor, induction motor and so on.

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3 0
2 years ago
At a certain elevation, the pilot of a balloon has a mass of 120 lb and a weight of 119 lbf. What is the local acceleration of g
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Answer:

31.905 ft/s²

Explanation:

Given that

Mass of the pilot, m = 120 lb

Weight of the pilot, w = 119 lbf

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Local acceleration of gravity of found by using the relation

Weight in lbf = Mass in lb * (local acceleration/32.174 lbft/s²)

119 = 120 * a/32. 174

119 * 32.174 = 120a

a = 3828.706 / 120

a = 31.905 ft/s²

Therefore, the local acceleration due to gravity at that elevation is 31.905 ft/s²

3 0
2 years ago
Which statement describes the redox reaction involved in photosynthesis?
NeTakaya

Answer:

D. O2 is removed from the atmosphere, and CO2 is released

Explanation:

Hope it helps you

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2 years ago
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Pure water has a pH of 7. Pure water _______. A. Is a neutral substance B. Could be either an acid or a base C. Is a base D. Is
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A. is a neutral substance a pH of 7 describes something of neutral pH where anything less than 7 is an acid and higher is a base

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3 years ago
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