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inysia [295]
3 years ago
8

I neeed helpp , which one is thhe best answer????

Physics
1 answer:
Llana [10]3 years ago
8 0
She benefits from products that use minerals found using geological maps.
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При равноускоренном движении из состояния покоя тело проходит путь 500 м и развивает скорость 90 км/ч. Найти время движения на э
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3 years ago
Four +2 μC charges are placed at the positions (10 cm, 0 cm), (−10 cm, 0 cm), (0 cm, 10 cm), and (0 cm, −10 cm) such that they f
Rufina [12.5K]

Answer:

The force on the charge at the origin is 0 N .

Explanation:

All charges are positive. So, in x axis force exerted by the charge located in the position (10 cm, 0 cm) will be canceled with the force exerted by the charge located in the position (-10 cm, 0 cm). In the same way, in y axis the force exerted by the charge located in the position (0 cm, 10 cm) will be canceled with the force exerted by the charge located in the position (0 cm, -10 cm).

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4 years ago
What is the energy of an electromagnetic wave that has a frequency of 5.0 x 10⁵ Hz?
Valentin [98]

Answer: 3.3 x 10^-28 J

Explanation: just answered on a quiz!! :)

5 0
3 years ago
Which type of earthquake waves are responsible for most of the damage caused by an earthquake? Why?
den301095 [7]

Answer:

Surface waves travel along the surface. There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.

5 0
3 years ago
Read 2 more answers
Suppose that an electron and a positron collide head-on. Both have kinetic energy of 1.20 MeV and rest energy of 0.511 MeV. They
AnnZ [28]

Answer:

E = 1.711 MeV

Explanation:

From the law of the conservation of energy:

K.E_{e}+K.E_p + E_{e}+E_{p} = 2 E

where,

K.E_e=K.Ep= the kinetic energy of positron and electron = 1.2 MeV

E_e=E_p = Rest energy of the electron and the positron = 0.511 MeV

E = Energy of Photon = ?

Therefore,

1.2\ MeV + 1.2\ MeV + 0.511\ MeV + 0.511\ MeV = 2E\\\\E = \frac{3.422\ MeV}{2}\\\\

<u>E = 1.711 MeV</u>

3 0
3 years ago
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