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zimovet [89]
4 years ago
15

1) Explain the difference between scientific theories and laws.

Physics
1 answer:
lara [203]4 years ago
7 0
A scientific theory is a proposed explanation for something.
A scientific law is a fact, its a rule.
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The Nucleus of the Atom is in the center of the Atom, not in the outer rings & orbitals.
chubhunter [2.5K]

Answer:

true

Explanation:

this the nucleus is located at the centre and contains protons and neutrons

3 0
3 years ago
Water flows through a first pipe of diameter 3 inches. If it is desired to use another pipe for the same flow rate such that the
Alborosie

Answer:

the diameter of the second pipe is 2.52 in

Explanation:  

Given the data in the question;

We know that; the rate of flow is the same;

so

Av1 = Av2

v ∝ √h

\frac{A1}{A2} = \frac{V2}{V1}

\frac{A1}{A2}  = √(  \frac{h2}{h1} )

( π/4.D1² / π/4.D2² ) = √(  \frac{h2}{h1} )

( D1² / D2² ) =  √(  \frac{2h1}{h1} ) since second is double of first

so

( D1² / D2² ) =  √(  \frac{2}{1} )  

3² / D2² =  √2

D2²√2  = 9

D2² = 9/√2

D2² = 9 / 1.4142

D2² = 6.364

D2 = √ 6.364

D2 = 2.52 in

Therefore, the diameter of the second pipe is 2.52 in

3 0
3 years ago
Newton's law of gravitation states that two masses will ______.
spin [16.1K]
Pretty sure the answer is B. Attract each other
4 0
3 years ago
Read 2 more answers
A 1.13 kg skateboard is coasting along the pavement at a speed of 4.28 m/s when a 0.93
faust18 [17]

By conservation of momentum,

Pinitial = Pfinal

m1v1 + m2v2 = (m1 + m2)*vf

m1 = mass of skateboard = 1.13 kg

m2 = mass of cat = 0.93 kg

v1 = initial velocity of skateboard = 4.28 m/s

v2 = initial velocity of cat = 0 m/s

vf = final velocity of skateboard-cat combo

So plug in the values and solve for vf,

1.13(4.28) + 0.93(0) = (1.13 + 0.93)vf

vf = 2.35 m/s

5 0
3 years ago
Which statement best explains why Earth’s outer core is in liquid form? The iron-nickel alloy melts due to hot temperatures. The
amm1812

Answer:

A. The iron-nickel alloy melts due to hot temperatures.

Explanation:

7 0
3 years ago
Read 2 more answers
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