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mrs_skeptik [129]
3 years ago
11

I need help with question 17

Physics
1 answer:
Alexxx [7]3 years ago
6 0
It is b i had that qustion 

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A goldfish is capable of seeing which electromagnetic wave?
Leno4ka [110]

Answer:

D

Explanation:

they can see this along with many other fish.

6 0
3 years ago
Globular clusters are important to understanding the Milky Way because Choose one: A. they reveal the size of the Milky Way and
kirill115 [55]

The correct answer is (A) they reveal the size of the Milky Way and Earth's location in it.

<h3>Why are globular clusters important?</h3>

Globular clusters are densely packed groups of old stars. They are roughly spherical in form and contain hundreds of thousands, if not millions, of stars. Studying them can help astronomers determine the age of the universe or locate the core of a galaxy.

According to Georgia State University there are around 150 identified globular clusters in the Milky Way galaxy. Most are thought to be at least 10 billion years old and contain some of the galaxy's oldest stars. The clusters most likely originated relatively early in the galaxy's evolution, before it flattened into a spiral disc.

Some globular clusters, like as Messier 13 (M13) in Hercules, are visible with the eye.

learn more about globular clusters refer:

brainly.com/question/14124832

#SPJ4

5 0
2 years ago
A ski jumper travels down a slope and leaves
Serhud [2]

Question seems to be missing. Found it on google:

a) How long is the ski jumper airborne?

b) Where does the ski jumper land on the incline?

a) 4.15 s

We start by noticing that:

- The horizontal motion of the skier is a uniform motion, with constant velocity

v_x = 28 m/s

and the distance covered along the horizontal direction in a time t is

d_x = v_x t

- The vertical motion of the skier is a uniformly accelerated motion, with initial velocity u_y = 0 and constant acceleration g=9.8 m/s^2 (where we take the downward direction as positive direction). Therefore, the vertical distance covered in a time t is

d_y = \frac{1}{2}gt^2

The time t at which the skier lands is the time at which the skier reaches the incline, whose slope is

\theta = 36^{\circ} below the horizontal

This happens when:

tan \theta = \frac{d_y}{d_x}

Substituting and solving for t, we find:

tan \theta = \frac{\frac{1}{2}gt^2}{v_x t}= \frac{gt}{2v_x}\\t = \frac{2v_x}{g}tan \theta = \frac{2(28)}{9.8} tan 36^{\circ} =4.15 s

b) 143.6 m

Here we want to find the distance covered along the slope of the incline, so we need to find the horizontal and vertical components of the displacement first:

d_x = v_x t = (28)(4.15)=116.2 m

d_y = \frac{1}{2}gt^2 = \frac{1}{2}(9.8)(4.15)^2=84.4 m

The distance covered along the slope is just the magnitude of the resultant displacement, so we can use Pythagorean's theorem:

d=\sqrt{d_x^2+d_y^2}=\sqrt{(116.2)^+(84.4)^2}=143.6 m

7 0
3 years ago
Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30ms
nexus9112 [7]
S= ?
U= 0 ms^{-1}
V= 30 ms^{-1}
A= 9.8 ms^{-2}
T= 

V^2 = U^2 + 2AS
900 = 19.6S
\frac{900}{19.6} = S
S = 45.92 m
6 0
4 years ago
A circuit has a current of 1.2 A. If the voltage decreases to one-third of its original amount while the resistance remains cons
lapo4ka [179]
Consider the formula ...

Current  =  (voltage) / (resistance) .

If the resistance doesn't change, then the current is
directly proportional to the voltage.

If the voltage decreases to 1/3 of what it used to be,
then the current does the same thing.

1.2 A  ---->  0.4 A
6 0
3 years ago
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