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Harlamova29_29 [7]
2 years ago
9

If Calcium has 2 valence electrons and Chlorine has 7 valence electrons, how many Cl-1 ions would need to combine with 1 Ca+2 io

n?
Physics
1 answer:
Tanya [424]2 years ago
6 0

Answer:

CALCIUM IDENINE ADEININE AND PHOSPHATE

Explanation:

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A body is travelling with a velocity 30 m/s².what will be its velocity after 4s?​
Ipatiy [6.2K]

Answer:

70m/s²

Explanation:

we will use the first equation of Dalton to find it

3 0
2 years ago
Does exists the friction force in space?If yes,tell an full example
VashaNatasha [74]
Yes, friction does exist in space. Friction has nothing to do with the earth's atmosphere. It exists everywhere in the universe. <span />
5 0
3 years ago
Which waves can be seen by people?
e-lub [12.9K]

Answer:

Visible waves can be seen by people.

Explanation:

Electromagnetic waves comprises of different kind of waves. It consists of cosmic waves, x-rays waves, gamma waves, ultra violet waves, visible waves, infrared waves, microwaves. Among these waves, depending upon the wavelength of each kind of waves, it is visible and invisible to naked eyes. Thus, visible waves are the one which can be seen by people in naked eyes. As the wavelength of these waves are in comparable to the eye sight, so it can be seen by people.

4 0
3 years ago
A 0.110 m radius, 506-turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having its plane perpendicular to a
8090 [49]

Answer:

Explanation:

Expression for emf induced = 1 /2 B n r²ω where B is magnetic field , r is radius of the coil and ω is angular velocity of rotation , n is no of turn .

ω = 2πf = 2π x 60 = 120 π   ; where f is frequency of rotation .

emf induced =  1 /2 B r²x 120π x n

Putting the given values

10000 = .5 x B x .11² x 120 x 3.14 x 506

B = 8.67 T .

3 0
2 years ago
A spring with a spring constant of 23.6 N/m has a mass attached that exerts a force of 6.28 Newtons. What is the displacement?
Ostrovityanka [42]

Answer:

26.6 cm

Explanation:

We are given that

Spring constant=23.6 N/m

Force exert=6.28 N

We have to find the displacement.

We know that Hooke's law

F=kx

Where k= Spring constant

x=Displacement

Using the formula

Then, we get

6.28=23.6 x

x=\frac{6.28}{23.6}=0.266m

We know that 1 m=100 cm

x=0.266\times 100=26.6 cm

Hence, the displacement =26.6 cm

7 0
3 years ago
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