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3 years ago

What primary element of light helps the observer see three-dimensions?

2 answers:

7 0

<span>Shading. When light hits an opaque surface some is absorbed, the rest is reflected, The reflected light is called shading. Reflection is not simple and varies with material. The surface’s structure defines the details of reflection. Variations produce anything from bright specular reflection</span>

amid [387]3 years ago

5 0

It would be D shading just took the test

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WhAT is the change IN THE entropy of 2.0kg of h2o molecules when transform at a constant pressure of 1 atm from water at 100 deg

Fynjy0 [20]

Answer:

The entropy change is 45.2 kJ/K.

Explanation:

mass of water at 100 C = 2 kg

Latent heat of vaporization, L = 2260 kJ/kg

Heat is

H = m L

H = 2 x 2260 = 4520 kJ

Entropy is given by

S = H/T = 4520/100 = 45.2 kJ/K

3 0

3 years ago

A 10 mH inductor is connected in series with a 10-ohm resistor, a switch and a 6-volt battery.(a) What is the time constant of t

maxonik [38]

Explanation:

It is given that,

Inductance of the inductor, $L=10\ mH=10\times 10^{-3}\ H=10^{-2}\ H$

Resistance of the resistor, R = 10 ohms

(a) Let $\tau$ is the time constant of the circuit. It is given by :

$\tau=\dfrac{L}{R}$

$\tau=\dfrac{10^{-2}}{10}$

$\tau=0.001\ s$

$\tau=1\ ms$

(b) The current equation in RL circuit is given by :

$I'=I(1-e^{\dfrac{-t}{\tau}})$

I' = 0.99 I

$0.99=1-e^{\dfrac{-t}{\tau}}$

$e^{\dfrac{-t}{\tau}}=0.01$

$e^{\dfrac{-t}{1\ ms}}=0.01$

t = 4.6 ms

Hence, this is the required solution.

5 0

3 years ago

Pls help i give brainliest

san4es73 [151]

Answer:

Explanation:

cuz whenever the ball was traveling up the staircase it was building up energy to use (potential energy) unlike b.

5 0

3 years ago

Read 2 more answers

Distinguish between speed and velocity

Vanyuwa [196]

Velocity is a vector quantity, follows law of vector addition, has both direction and magnitude while speed is a scalar quantity , follows law of algebra and only has magnitude

4 0

3 years ago

A dart is thrown horizontally with an initial speed of 19 m/s toward point P, the bull's-eye on a dart board. It hits at point Q

Nutka1998 [239]

Answer:

Explanation:

The dart will go forward horizontally with velocity of 19 m/s. It will also fall downwards with initial velocity of zero and gravitational acceleration of 9.8 m/s².

Distance PQ covered by the dart can be calculated using the following formula.

s = ut + 1/2 at²

u is initial velocity , a is acceleration and t is time.

Putting the values

s = 0 + 1/2 x 9.8 x .19²

= .1769 m

= 17.69 cm.

5 0

3 years ago