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disa [49]
3 years ago
15

Leonardo DaVinci wrote notes using a special kind of shorthand that he invented himself. He started writing at the right side of

a
page and moved to the left, writing the letters in reverse as seen here. To read what DaVinci wrote you had to use a....?

A)mirror.

B)microscope.

C)magnifying glass.

D)pair of eye glasses.
Physics
1 answer:
schepotkina [342]3 years ago
3 0

Answer:

A)mirror.

Explanation:

To read what DaVinci wrote, one has to use a mirror. This style of writing is known as mirror writing.

A mirror is an optical instrument that has smooth surface and can reflect light to form an image.

  • When a mirror is placed in front of the image, it will show clearly and readable.
  • Mirror images laterally inverts a text and will make the text normal again.
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A 55-liter tank is full and contains 40kg of fuel. Find using Sl units: • Density p. • Specific Weight y • Specific Gravity Answ
Pavlova-9 [17]

Answer:

p = 727.273 kg/m3,  y = 7134.545 N/m^3, SG = 0.7273

Explanation:

Density is simply the amount of mass of a substance per unit of volume. It can be found by dividing the mass in kg by the volume im m^3:

p = \frac{m}{v}  = \frac{40kg}{55lt*\frac{1 m^3}{1000 lt}} = 727.273 kg/m^3

Specific weight is the weight of the substance per unit of volume. The weight is the mass of the material times the gravity, and it represents the force that the earth exerts on an object. Another way of calculate this value, its multiplying the density of the fuel times the gravity. Then:

y =  p*g = 727.273 kg/m^3 * 9.81 m/s^2 = 7134.545 N/m^3

Specific Gravity is the ratio of the density of the substance to the density of a reference substance. For liquids, the reference substance is water at 4°C, which has a density of about 1000 kg/m^3.

SG =\frac{ p_{fuel}}{p_{water}}  = \frac{727.273 kg/m^3}{1000 kg/m^3} = 0.7273

3 0
3 years ago
What is a main difference between the Schrodinger model and the bohr atomic model
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A marble dropped in still water will create circular ripples or waves. the radius of each circular wave will increase 4 centimet
Gnom [1K]

The circumference of the circle after t seconds = 25.12 t

Given data,

The radius of each circular wave will increase by four centimeters per second (cm/s)

In 1 second of circular wave radius = 4cm

In 1*t second of circular wave radius = 4t cm

 

As a result, the radius of the circular wave after t seconds is 4t cm.

We already know that the circumference of a circle is given by = 2πr, where r is the circle's radius.

As a result, the radius of a circular wave after t seconds is = 2π * radius of a circular wave after t seconds = 2π * 4t

                                                    = 8πt

( Taking π = 3.14 )

As a result, the circumference of the circle after t seconds = 8πt

                                                                                                     = 3.14t

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Find more on circumference at : brainly.in/question/49774764

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Which of the following describes a displacement vs. time graph that looks like this?
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constant non zero acceleration

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