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kipiarov [429]
3 years ago
9

Electromagnetic waves are transverse waves. They consist of traveling electric and magnetic fields which oscillate periodically.

What angle does the electric field make with the magnetic field in an electromagnetic wave?
Chemistry
1 answer:
BabaBlast [244]3 years ago
8 0

The angle made by electric field with the magnetic field in an electromagnetic wave is 90° or right angle.

<u>Explanation:</u>

The electrical & magnetic fields are at the 90 degree i.e at the right angles to the way the wave travels. The electric field oscillates back and forth in one plane while the magnetic field oscillates back and forth in a perpendicular plane;

the vibration, a transverse vibration, moves in a similar direction of each of the oscillating fields. All electromagnetic waves are created by accelerated charges, and the electromagnetic force follows the inverse-square law; the magnitude of the force declines as one above the squared source distance.

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4 0
3 years ago
How many ml of 0.5M of HNO3 would be needed to react with 85ml of 0.75M of KOH
olganol [36]

Answer: 127.5ml

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HNO_3

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is KOH.

We are given:

n_1=1\\M_1=0.5M\\V_1=?mL\\n_2=1\\M_2=0.75M\\V_2=85mL

Putting values in above equation, we get:

1\times 0.5\times V_1=1\times 0.75\times 85\\\\V_1=127.5mL

Thus 127.5 ml of 0.5M of HNO3 would be needed to react with 85ml of 0.75M of KOH

6 0
3 years ago
Una muestra de 1 gramo de un elemento contiene 1,5 x 1022 atomos, cual es su masa molar❓❓
marusya05 [52]

El número de Avogadro es 6,022 x 10^23, y es el número de átomos que hay en un mol de dicho elemento. A su vez un mol es la cantidad de un elemento cuya masa en gramos coincide con el peso atómico.

Por tanto, 6,022 x 10^23 átomos del elemento tienen una masa en gramos igual a su peso atómico. Hacemos una regla de tres:


1 gramo -------- 1,5 x 10^22 átomos

x ------------------ 6,022 x 10^23 átomos


=> x = 40,1 gramos por mol del elemento.


De modo que su peso atómico es 40,1. Se trata del calcio.


Saludos.

7 0
3 years ago
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