3 years ago

J. J. Thomson s experiments provided evidence that an atom

1 answer:

5 0

J.J. Thomson's experiments provided evidence that an atom B.contains negatively charged particles.

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Your Lead Teaching Assistant is initially seated on the top of a hemispherical ice mound of radius R = 30 m. Approximate the ice

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Answer:

<em>Height = 5.65 km</em>

Explanation:

$3\pi r^2$ is the circumference or we can say measures the boundary of hemisphere of friction-less ice that he is sitting on.

So, the height will be = 2 x 3.14 x (30)^2 = 5654.7 m = 5.65 km

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3 years ago

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can someone help me answer this question? A student connected an ammeter as shown in this picture. Did the student connect the a

nalin [4]

Answer:

No - It is connected in parallel instead of series

Explanation:

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2 years ago

0.75 km expressed in centimeters

Rufina [12.5K]

0.75 kilometer= 75000 centimeters

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3 years ago

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A vertical straight wire 35.0 cmcm in length carries a current. You do not know either the magnitude of the current or whether t

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Answer:

$1.714\ \text{A}$

Explanation:

F = Magnetic force = 0.018 N

B = Magnetic field = 0.03 T

L = Length of wire = 35 cm

$\theta$ = Angle between current and magnetic field = $90^{\circ}$

Magnetic force is given by

$F=IBL\sin\theta\\\Rightarrow I=\dfrac{F}{BL\sin\theta}\\\Rightarrow I=\dfrac{0.018}{0.03\times 35\times 10^{-2}\times \sin90^{\circ}}\\\Rightarrow I=1.714\ \text{A}$

The magnitude of the current is $1.714\ \text{A}$ .

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3 years ago

In 450 BCE, Greek philosopher Democritus first thought of the existence of tiny particles that compose everything around us. He

Masja [62]

B. The meaning of 'atomos' according to Democritus in 450 BCE is indivisible.

<h3>The building block of every matter</h3>

A Greek philosopher known as Democritus first thought of the existence of tiny particles that compose everything around us.

Democritus of Abdera, named the building blocks of matter atomos, meaning literally “indivisible.

Thus, the meaning of 'atomos' according to Democritus in 450 BCE is indivisible.

Learn more about atoms here: brainly.com/question/6258301

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2 years ago