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m_a_m_a [10]
4 years ago
11

I REALLY NEED HELP! HURRY! (I have 3 simple questions)

Physics
2 answers:
Scilla [17]4 years ago
6 0

Answer:

1. b

2. d

3. a

Hope this helped

tigry1 [53]4 years ago
5 0
1) evaporation
2)photosynthesis
3) ocean
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I don't get the flat line on a graph. on a distance/speed or motion graph, they say it is not moving. that is what I don't get i
timofeeve [1]
A flat line means the the speed is the same . Its moving at the same pace.
4 0
4 years ago
A simple model of a hydrogen atom is a positive point charge +e (representing the proton) at the center of a ring of radius a wi
Norma-Jean [14]

Answer:

Now e is due to the ring at a

So

We say

1/4πEo(ea/ a²+a²)^3/2

= 1/4πEo ea/2√2a³

So here E is faced towards the ring

Next is E due to a point at the centre

So

E² = 1/4πEo ( e/a²)

Finally we get the total

Et= E²-E

= e/4πEo(2√2-1/2√2)

So the direction here is away from the ring

8 0
4 years ago
The diagram below shows the stars that are nearest to our solar system.
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no u tried of the same dam

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Explanation:

7 0
4 years ago
If the forces acting on an object are balanced, the object may change speed, change direction, or do both. Please select the bes
Leviafan [203]

False is ur answer sorry if i am too late

8 0
4 years ago
Read 2 more answers
A cube 6.0 cm on each side is made of a metal alloy. After you drill a cylindrical hole 2.0 cm in diameter all the way through a
Crank

To solve this problem it is necessary to apply the concepts related to Newton's second law, the definition of density and the geometric relationships that allow us to find the volume of the figures presented.

For the particular case of the Cube with equal sides its volume is determined by

V_c = l^3

V_c = 6^3 = 216cm^3

In the case of perforated material we have that its volume is given according to the cylindrical geometry, that is to say

V_d = \pi r^2*l

V_d = \pi (\frac{2}{2})^2*6

V_d = 6\pi cm^3

In this way the net volume would be

\Delta V = V_c-V_d

\Delta V = 216cm^3-6\pi cm^3

\Delta V = 197.15cm^3 = 197.15*10^{-6}m^3

We need to find the mass, but we have the Weight and Gravity so from Newton's second Law

F= mg

m = \frac{F}{g}

m = \frac{6.6}{9.8}

m = 0.673kg

PART A) From the relation of density as a unit of mass and volume we have to

\rho = \frac{m}{V}

\rho = \frac{0.673}{197.15*10^{-6}}

\rho = 3413.64kg/m^3

PART B) To find the weight of the cube then we apply the ratio of

W = mg

W = V\rho g

W = (216*10^{-6})(3413.64)(9.8)

W = 7.22N

3 0
4 years ago
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