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Margarita [4]
2 years ago
12

Formulate your hypothesis​

Physics
1 answer:
inna [77]2 years ago
8 0

Explanation:

simple hypothesis null hypothesis and complex hypothesis

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How would a small bar magnet be oriented when placed at position X​
Alex Ar [27]

The answer is right here

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2 years ago
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Find the radioactivity of a 1 g sample of 226Ra given that <img src="https://tex.z-dn.net/?f=t_%7B1%2F2%7D%3D1620" id="TexFormul
dangina [55]

Answer:

Explanation:

No of atoms of Ra in 1 g of sample = 6.023 x 10²³ / 226

N = 2.66 x 10²¹

disintegration constant λ = .693 / half life

half life = 1620 x 365 x 60 x 60 x 24 = 5.1 x 10¹⁰ s

disintegration constant λ = .693 / 5.1 x 10¹⁰

radioactivity dn / dt = λN

= (.693 / 5.1 x 10¹⁰ )  x 2.66 x 10²¹

= .3614 x 10¹¹ per sec

= 3.614 x 10¹⁰ / s

6 0
2 years ago
What are plants and animals that get their energy from eating other things?
Zanzabum

Answer:

B. Consumers.

Explanation:

4 0
3 years ago
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How are magnetic and electric fields similar?
Licemer1 [7]

Answer:

Similarities between magnetic fields and electric fields: ... Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges). Like poles repel; unlike poles attract. Electric field points in the direction of the force experienced by a positive charge ...

Explanation:

copied and pasted from google. I copied and pasted your question into google and got this exact answer

Here is another thing from the same website just not shortened:

Similarities between magnetic fields and electric fields:

- Electric fields are produced by two kinds of charges, positive and negative. Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges).

- Like poles repel; unlike poles attract

- Electric field points in the direction of the force experienced by a positive charge. Magnetic field points in the direction of the force experienced by a north pole.

Differences between magnetic fields and electric fields:

- Positive and negative charges can exist separately. North and south poles always come together. Single magnetic poles, known as magnetic monopoles, have been proposed theoretically, but a magnetic monopole has never been observed.

- Electric field lines have definite starting and ending points. Magnetic field lines are continuous loops. Outside a magnet the field is directed from the north pole to the south pole. Inside a magnet the field runs from south to north.

5 0
2 years ago
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008 (part 1 of 3) 10.0 points A 3.2 kg object is subjected to two forces, F~ 1 = (1.9 N) ˆı + (−1.9 N) ˆ and F~ 2 = (3.8 N) ˆı
musickatia [10]

Answer:

a' =4.15 m/s²

Explanation:

Given that

m= 3.2 kg

F₁ = 1.9  i −1.9 j N

F₂=3.8 i −10.1 j N

From second law of Newton's

F(net) = m a

F₁ + F₂ = m x a

1.9  i −1.9 j + 3.8 i −10.1 j  = 3.2 a

a = 1.78 i - 3.75 j m/s²

The resultant  acceleration  a'

a'=\sqrt{1.78^2+3.75^2}\ m/s^2

a' =4.15 m/s²

6 0
3 years ago
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