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True [87]
3 years ago
7

Between which two points of a concave mirror should an object be placed to obtain a magnificati of -3​

Physics
1 answer:
kobusy [5.1K]3 years ago
8 0

Answer:

When object is placed between the focus (F) and pole (P) of a concave mirror, magnified and erect image of the object is formed on the back of the mirror.

When object is placed between the centre of curvature and the principal focus of a concave mirror, magnified and inverted image is formed in front of the mirror.

Explanation:

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A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnit
gayaneshka [121]

Answer:

9.6 Ns

Explanation:

Note: From newton's second law of motion,

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I = m(v-u).................. Equation 1

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Given: m = 2.4 kg, v = 2.5 m/s, u = -1.5 m/s (rebounds)

Substitute into equation 1

I = 2.4[2.5-(-1.5)]

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3 years ago
What force keeps the outside of a bicycle wheel from flying off?
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Answer:

Centripetal force

Explanation:

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"One of the main projects being carried out by the Hubble Space Telescope is to measure the distances of galaxies located in gro
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5 0
3 years ago
How long does it take for a 3.5 kW electric water heater to heat 40 kg of water? from 20 ° C to 75 ° C? The specific heat capaci
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2633.7 s

Explanation:

From the question,

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P = cm(t₂-t₁)/t.................. Equation 1

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t = 4190×40(75-20)/3500

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A student increased the resister of the voltmeter year not the circuit
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