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koban [17]
3 years ago
6

How many groups are in the modern periodic table? 12 18 22 24

Physics
2 answers:
JulijaS [17]3 years ago
4 0

Answer: 18

Explanation: On Edgenuity!!!!!!!!!

Elan Coil [88]3 years ago
3 0

Answer:

18

Explanation:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

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A radio wave has a speed of 3.00 x10^8 and a frequency of 100 MHz. What is the wavelength?
dlinn [17]

Answer:

Wavelength of radio is wave is 3 m

Explanation:

Wavelength of radio is wave is

\lambda=\frac{v}{f}

where

v=3 \times 10^8 m\s\\f=100 Mhz

wavelength is

\lambda=\frac{3\times 10^8}{100\times 10^6} \\\\\lambda=3 m\\

5 0
3 years ago
The Biot-Savart Law describes the relationship between which of the following? Select all that apply.
faltersainse [42]
The correct answer is magnetic field, electric field, and charges.


8 0
3 years ago
Consider two massless springs connected in parallel. Springs 1 and 2 have spring constants k1 and k2 and are connected via a thi
77julia77 [94]

Answer:

k1 + k2

Explanation:

Spring 1 has spring constant k1

Spring 2 has spring constant k2

After being applied by the same force, it is clearly mentioned that spring are extended by the same amount i.e. extension of spring 1 is equal to extension of spring 2.

x1 = x2

Since the force exerted to each spring might be different, let's assume F1 for spring 1 and F2 for spring 2. Hence the equations of spring constant for both springs are

k1 = F1/x -> F1 =k1*x

k2 = F2/x -> F2 =k2*x

While F = F1 + F2

Substitute equation of F1 and F2 into the equation of sum of forces

F = F1 + F2

F = k1*x + k2*x

= x(k1 + k2)

Note that this is applicable because both spring have the same extension of x (I repeat, EXTENTION, not length of the spring)

Considering the general equation of spring forces (Hooke's Law) F = kx,

The effective spring constant for the system is k1 + k2

3 0
2 years ago
A container of soy milk has the instructions on its label to “shake well before opening ” The soy milk is most likely a ?
Elena-2011 [213]

Answer:

D. Suspension

4 0
3 years ago
The __________ states that the firing rate of neurons in the auditory nerve matches the frequency of the sound wave.
borishaifa [10]

Correct answer choice is:

C. Volley principle (FREQUENCY MATCHING)

Explanation:

Volley theory declares that groups of neurons of the hearing rule counter to a noise by firing action potentials imperceptibly out of the stage with one another so that when connected, a higher pulse of sound can be encoded and transmitted to the brain to be examined.

7 0
3 years ago
Read 2 more answers
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