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Masteriza [31]
2 years ago
15

Can someone help me with these problems? ​

Physics
1 answer:
Paladinen [302]2 years ago
3 0
120/60= 2m per s
220/55= 4m per s
720/80= 9m per s
Fastest run: 3rd run
Speed: 9m per s
Slowest: 1st run
Speed: 2m per s

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What Happens when a warm fluid cools down
tiny-mole [99]
Energy is released to the environment. 
7 0
3 years ago
Different regions of the galaxy tend to contain stars of different ages. Place labels for the ages of stars in the correct regio
Greeley [361]

Disk of dust and gas contains the new born stars and as well as young stars and the Halo region contains the old stars.

The different regions of a spiral galaxy like our Milky way tend to have characteristic populations of stars.

Halo: The halo tends to have older, red stars. In general, blue stars are larger but since they are also hotter, tend to run through their fuel faster and have shorter lives. Halo stars tend to be older stars, The halo is generally lacking in dust and low in metals.

Bulge: The outer Area of the bulge has mostly older red stars. The inner bulge has active star formation and has a mix of red and blue stars.

Disk: The disk has active star formation regions, so there are young blue stars in that region. Here are the stars that are both old stars and young stars. The blue stars are largely found on the edges of the spiral arms.

Thus disk with the dust clouds contains new and young stars. And halo region contains old stars.

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6 0
2 years ago
A wire of radius 0.6 cm carries a current of 94 A that is uniformly distributed over its cross-sectional area. Find the magnetic
Pavel [41]

Answer:

0.00299T

Explanation:

The magnetic field B = 0.00299T

7 0
3 years ago
If the constant acceleration continues for 10.0s, what will be it’s velocity then?
velikii [3]

There's not enough information in the question to find the object's velocity. The best we can do is describe its speed.

The object's speed at the end of the 10.0 seconds =

<em>(its speed at the beginning of the 10.0 seconds)</em>

plus

<em>(10) </em>times<em> (the value of the acceleration) .</em>

<em></em>

5 0
3 years ago
Read 2 more answers
Elements that typically give up electrons CHECK ALL THAT APPLY
lys-0071 [83]

Answer:

B. have a lower ionization energy

D. are metals

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.

Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.

Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.

Valency can be defined as a measure of the combining power of a chemical element with other atoms to form a molecule or chemical compound.

Typically, valency is measured by the amount of hydrogen atoms that a chemical element can combine with or displace to form a molecule or chemical compound.

Ionization energy can be defined as the minimum energy required to remove or detach an electron from a neutral atom in a gaseous state.

Generally, the ionization energy of chemical elements tend to increase from left to right across a period on the periodic table. This increase is due to the fact that the atomic radius of chemical elements generally decreases across the periodic table, typically from alkali metals (group one elements such as hydrogen, lithium and sodium) to noble gases (group eight elements such as argon, helium and neon) i.e from left to the right of the periodic table. Also, the atomic radius of a chemical element increases down each group of the periodic table, typically from top to bottom (column).

This ultimately implies that, atoms with relatively large atomic radii tend to have a low electron affinity and a low ionization energy.

In conclusion, chemical elements that typically give up electrons are metals because their outermost shell contains excess electrons and have a lower ionization energy.

4 0
3 years ago
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