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4 years ago

Describe the four shading techniques

SAT

1 answer:

Afina-wow [57]4 years ago

6 0

1. Cross hatching

With cross hatching you are drawing parallel lines, varying the direction of the lines and layering them to obtain different intensity of shading.

2. Hatching with parallel lines

Hatching with parallel lines is the same as cross hatching, except you are making all the lines go in the same direction. It is a bit more time consuming than cross hatching but can lead to interesting results.

3. Contour lines

Contour lines can be done in many different ways but basically the idea is to have the lines follow the shape of what you are drawing.

4. Scribbles

Scribbling is a fun way to shade a drawing and it goes fast!

Scribble drawings shading works particularly well for portraits and still life.

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List four factors that can be varied to change the strength of the magnetics

Musya8 [376]

Answer:

The four main factors that affect the strength of an electromagnet are the loop count, the current, the wire size, and the presence of an iron core.

Explanation:

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3 years ago

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Which part of a presentation about bullying does this slide illustrate? it presents an overview of the problem. it shows a negat

zavuch27 [327]

Answer:

Explanation:

I just got it right on the assignment :)

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3 years ago

a 15.0 kg block is attached to a very light horizontal spring of force constant 575 n/m and is resting on a smooth horizontal ta

Luden [163]

The instantaneous velocity of the 15 kg. mass just after collision can be found by the principle of linear momentum.

a) The speed of the 15 kg. just after collision is 2 m/s.

b) The type of collision is inelastic collision

c) The compression of the spring is approximately 0.323 m.

Reasons:

The given parameters are;

Mass of the block attached to the spring, m₁ = 15.0 kg

Force constant of the spring, K = 575 N/m

Mass of the stone that strikes the block, m₂ = 3.00 kg

Speed of the stone, v₂ = 8.00 m/s

Speed with which the stone rebounds, v₃ = 2.00 m/s

a) The total initial momentum = 3 kg. × 8 m/s = 24 kg·m/s

The final momentum, just after collision = 3 × (-2) kg·m/s + 15 kg ×v₁

By conservation of momentum, we have;

24 kg·m/s = 3 × (-2) kg·m/s + 15 kg ×v₁

$v_1 = \dfrac{24 \, kg \cdot m/s + 6 \, kg \cdot m/s}{15 \, kg} = 2 \, m/s$

The speed of the 15 kg. just after collision, v₁ = 2 m/s.

b) A collision is elastic when the kinetic energy of the collision is conserved

The initial kinetic energy, K.E.₁ = 0.5 × 3 kg. ×(8 m/s)² = 96 J

The sum of the final kinetic energy are;

0.5 × 3 kg. × (2 m/s)² + 0.5 × 15 kg × (2 m/s)² = 36 J

The initial kinetic energy ≠ The final kinetic energy

Therefore, the collision is not elastic

Kinetic energy of the block, K.E. = 0.5 × 15 kg × (2 m/s)² = 30 J

Elastic energy gained by the block = 0.5 × K × x² = 0.5 × 575 N/m × x²

Therefore;

0.5 × 575 N/m × x² = 30 J

$x^2 = \dfrac{30 \, J}{0.5 \times 575 \, N/m} = \dfrac{12}{115} \, m^2$

$x = 2 \cdot \sqrt{\dfrac{3}{115} } \approx 0.323$

The compression of the spring, x ≈ 0.323 m.

Learn more here:

brainly.com/question/7694106

Questions;

(a) The speed of the 15 kg mass immediately after the collision.

(b) Determine the type of collision; Elastic or inelastic collision.

(c) The distance to which the spring is compressed by the block.

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3 years ago

The maximum time allotted to complete both parts of the critical-reading section of the PSAT is

Degger [83]

The maximum time is 60 minutes

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3 years ago

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Convert the following complex number into its polar representation -4i

maks197457 [2]

The expression which represent the polar form of complex number -4i when converted into the polar form is 4(cos π+ isin π)

<h3>What is complex number?</h3>

A complex number is the combination of real and imaginary number. In a complex number, real part and imaginary part of number is written together. For example,

a+bi

Here, (a) is the real part while (b) is the imaginary part.

The complex number which need to convert into its polar representation is,

n=-4i

It can be rewritten as,

n=0-4i

The radius r of the polar form is,

r²=0²+(-4)²

r²=0+16

r=4

The value of cos theta is,

tan θ=0/-4

θ=tan⁻¹(0)

θ=π

Thus, the polar form is,

z=rcos θ+(r sin θ)i

z=-4(cos π+ isin π)

Thus, the expression which represent the polar form of complex number -4i when converted into the polar form is 4(cos π+ isin π)

Learn more about the complex number here;

brainly.com/question/2218826

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3 years ago