3 years ago

The diagram below shows a flat mirror reflecting

Physics

2 answers:

egoroff_w [7]3 years ago

7 0

Answer:

Explanation

your welcome

sukhopar [10]3 years ago

6 0

Answer:

TO MEASURE THE ANGLES OF RAYS

Explanation:

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What is a property of a transparent object? A. Almost all of the light rays that reach it are scattered. B. Almost all of the li

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Transparent means almost all the light passes through it, so D.

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3 years ago

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A uniform string of length 10.0 m and weight 0.32 N is attached to the ceiling. A weight of 1.00 kN hangs from its lower end. Th

Juliette [100K]

Answer: 0.0180701 s

Explanation:

Given the following :

Length of string (L) = 10 m

Weight of string (W) = 0.32 N

Weight attached to lower end = 1kN = 1×10^3

Using the relation:

Time (t) = √ (weight of string * Length) / weight attached to lower end * acceleration due to gravity

g = acceleration due to gravity = 9.8m/s^2

Weight of string = 0.32N

Time(t) = √ (0.32 * 10) / [(1*10^3) * (9.8)]

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3 years ago

Use the equation d = m/v [stack fraction), where d= density, m= mass, and v

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Answer:

54.

Explanation:

6 (v) x 9 (m) = 54.

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3 years ago

in which kind of radioactive decay would the number of protons in the resulting nucleus be more than in the initial nucleus?

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2 years ago

The brain mass of a human fetus during a particular trimester can be accurately estimated from the circumference of the head by

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Answer:

a. If c = 20 cm, then the mass of the brain is m = 5 g.

b. At c = 20 cm, the brain's mass is increasing at a rate of 15.75 g/cm.

Explanation:

From the equation

$m\left(c\right) = \frac{c^3}{100}-\frac{1500}{c}$

we have

a. for c = 20 cm

$m\left(20\right)=\frac{20^3}{100}-\frac{1500}{20}=5,$

then the mass is m(20) = 5 g.

b. In order to find the rate of change, first we derivate

$\frac{dm}{dc}=\frac{3c^2}{100}+\frac{1500}{c^2}.$

Evaluated at c = 20 cm, we have

$\frac{dm}{dc}|_{c=20}=\frac{3\times 20^2}{100}+\frac{1500}{20^2}=15.75.$

So, at c = 20 cm, the mass of the brain is increasing at a rate of 15.75 g/cm.

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3 years ago