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Scilla [17]
3 years ago
14

9. The map shows the migratory range of the

Physics
1 answer:
Arisa [49]3 years ago
8 0

Answer:

I think it's B

I hope it helps u

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A girl walks from her home to a friends house 3 km north she then walks East 2 km to the post office then 1 km north to the libr
ale4655 [162]

Answer:

what airplane does she like?

Explanation:

6 0
3 years ago
Tina and her puppy are tugging on a rope, each pulling on opposite ends. When is Tina doing work?
skelet666 [1.2K]
<span>Work is classified as anything the exerts energy from a system. Therefore, during the entire activity as Tina both holds the rope and actively pulls on the rope with her puppy she is completing work. Tina also does work when she walks toward and way from her puppy.</span>
3 0
4 years ago
Read 2 more answers
A spacecraft on its way to Mars has small rocket engines mounted on its hull; one on its left surface and one on its back surfac
lozanna [386]

Answer:

v=545.41 \frac{m}{s}

β=-25.93

Explanation:

Give the acceleration in 'x' and 'y' also the time can find the initial velocity using equation of uniform acceleration motion

For axis x

a_{x}=5.10\frac{m}{s^{2}} \\v_{fx}=3780\frac{m}{s} \\v_{fx}=v_{ox}+a_{x}*t\\v_{ox}=v_{fx}-a_{x}*t\\v_{ox}=3780 \frac{m}{s}-5.1\frac{m}{s^{2} }*645s\\v_{ox}=490.5\frac{m}{s}

For axis y

a_{y}=7.30\frac{m}{s^{2}} \\v_{fy}=4470\frac{m}{s} \\v_{fy}=v_{oy}+a_{y}*t\\v_{oy}=v_{fy}-a_{y}*t\\v_{oy}=4470\frac{m}{s}-7.30\frac{m}{s^{2} }*645s\\v_{oy}=-238.5\frac{m}{s}

Maginuted

v=\sqrt{v_{xo}^{2} +v_{yo}^{2} } \\v=\sqrt{490.5x^{2} +(-238.5)^{2} }\\v=545.41 \frac{m}{s}

The  direction is knowing when find the angle so

\beta =tan^{-1}*\frac{v_{yo} }{v_{xo}}\\\beta =tan^{-1}*\frac{-238.5}{490.5}\\\beta =tan^{-1}*-0.48\\\beta =-25.93

4 0
3 years ago
As an atom’s radius increases, 1. its ionization energy increases. 2. its ionizations energy increases or decreases depending on
Serhud [2]

Answer:

The correct option is: 4. its ionization energy decreases

Explanation:

Ionization energy refers to the energy required to pull a valence electron completely from the valence shell of a gaseous atom.

Now, in the <u>periodic table of chemical elements</u>, as we down a group, the atomic radius increases, so the effective nuclear charge experienced by the valence electron decreases. Therefore, the <u>ionization energy decreases</u><u>, down the group.</u>

As we across a period, the atomic radius usually decreases, so the effective nuclear charge experienced by the valence electron increases. Therefore, usually the <u>ionization energy increases</u><u>, across the period.</u>

<u>Therefore, as the atomic radius increases, the effective nuclear charge experienced by the valence electron decreases and thus the ionization energy also decreases.</u>

5 0
3 years ago
How many atoms are in a sample of 1.83 moles of potassium (K) atoms?
telo118 [61]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

 </span>1.83 moles K (6.022 x 10^23 atoms / mole ) = 1.10 x 10^24 atoms K
4 0
3 years ago
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