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4 years ago

Mirages are due to what

2 answers:

5 0

Convection causes the temperature of the air to vary from cool-hot. this variation between the hot air on the surface of the road and the cold air that is close above it creates a gradient located in the refractive index of air and you see what we call a mirage! hope this helps!.
BRAINLIEST PLEASE!

Alexeev081 [22]4 years ago

3 0

Atmospheric refraction.

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HELPPP I NEED HELP ASAP NOW

Zarrin [17]

Answer:

Your answers would be

4. A. sperm and testosterone.

7. C. prostate, penis, Testes

uterus, vagina, fallopian tubes

10. B. Protein

11. A. carbohydrate

12. B. amino acids (I'm not positive on this i haven't taken bio in years

27. D. Respiratory system

Explanation:

yeah

8 0

3 years ago

Robin would like to shoot an orange in a tree with his bow and arrow. The orange is hanging yf=5.00 m above the ground. On his f

kramer

Answer:

17.5 m

Explanation:

First of all, we need to find the time the arrow need to cover the horizontal distance between the starting point and the orange, which is

x = 49.0 m

We start by calculating the horizontal component of the arrow's velocity:

$v_x = v_0 cos \theta = (36.0)(cos 30.0^{\circ})=31.2 m/s$

And this horizontal velocity is constant during the entire motion. So, the time taken to reach the horizontal position of the orange is

$t=\frac{x}{v_f}=\frac{49.0}{31.2}=1.57 s$

Now we can find the height of the arrow at that time by using the equation for the vertical position:

$y=h+u_y t - \frac{1}{2}gt^2$

where:

h = 1.30 m is the initial height

$u_y = v_0 sin \theta = (36.0)(sin 30.0^{\circ})=18.0 m/s$ is the initial vertical velocity

t = 1.57 s is the time

$g=9.81 m/s^2$ is the acceleration of gravity

Substituting into the equation, we find

$y=1.30+(18)(1.57)-\frac{1}{2}(9.81)(1.57)^2=17.5 m$

6 0

3 years ago

a person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 18 m/s. The cliff is 52 m above the

Alexxx [7]

You already have the speed, now you need the time.
I will use the formula for speed which is S=D/T.
S=Speed D=Distance T=Time.
So here we have, 18m/s = 52m/T
we do 18 divided by 52 which would be .3461.
.3461 seconds is how long it took the stone to reach the water.

7 0

4 years ago

Read 2 more answers

How are the words season,equinox and solstice related ??

Rasek [7]

They are all related to what time of year it is.

8 0

3 years ago

Read 2 more answers

In a lightning bolt, a large amount of charge flows during a time of 1.2 x 10-3 s. Assume that the bolt can be represented as a

ohaa [14]

Answer: 10.58 C has flowed during the lightning bolt

Explanation:

Given that;

Time of flow t = 1.2 × 10⁻³

perpendicular distance r = 21 m

Magnetic field B = 8.4 x 10⁻⁵ T

Now lets consider the expression for magnetic field;

B = u₀I / 2πr

the current flow is;

I = ( B × 2πr ) / u₀

so we substitute

I = ( (8.4 x 10⁻⁵) × 2 × 3.14 × 21 ) / 4π ×10⁻⁷

= 0.01107792 / 0.000001256

= 8820 A

Hence the charge flows during lightning bolt will be;

q = It

so we substitute

q = 8820 × 1.2 × 10⁻³

q = 10.58 C

therefore 10.58 C has flowed during the lightning bolt

6 0

4 years ago