What is a plane mirror ?

Physics

1 answer:

g100num [7]4 years ago

6 0

Answer:

A plain mirrior is a mirrior with flat reflective surface.

hope it is helpful for you.

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Craig Terrill has many _________. Press enter to interact with the item, and press tab button or down arrow until reaching the S

iren2701 [21]

Answer:

is there anything that is a hint? like a picture or a story?

Explanation:

7 0

3 years ago

Two coins, made of different material, are placed next to each other so that they are touching. Both coins are 15mm in diameter.

nekit [7.7K]

The mass of the second coin for the given gravitation force is 20.9 g.

The given parameters;

distance between the two coins, r = 15 mm = 0.015 m
mass of one coin, m₁ = 6.5 g = 0.0065 kg
gravitational force between the coins = 4.03 × 10⁻¹¹ N

The mass of the second coin is determined by applying Newton's law of universal gravitation as shown below;

$F = \frac{Gm_1 m_2 }{R^2} \\\\m_2 = \frac{FR^2}{Gm_1} \\\\m_2 = \frac{(4.03 \times 10^{-11}) \times (0.015)^2}{(6.67 \times 10^{-11}) \times (0.0065)} \\\\m_2 = 0.0209 \ kg\\\\m_2 = 20.9 \ g$

Thus, the mass of the second coin for the given gravitation force is 20.9 g.

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3 years ago

If the load is 13 cm from the fulcrum, how much effort is needed to lifth the load ? Help me.

snow_tiger [21]

That depends on a few things that you haven't told us about the setup.
So I'm going to assume one of them, and then give you the answer
in terms of another one:

-- Assume a Class-I lever . . . the fulcrum is between the load and the effort.

-- Then the effort needed to lift the load is

(the weight of the load) x (13 / the distance between the fulcrum and the effort)

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3 years ago

Modern oil tankers weigh over a half-million tons and have lengths of up to one-fourth mile. Such massive ships require a distan

sergiy2304 [10]

(a) $-1.46\cdot 10^{-4} m/s^2$