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3 years ago

The smallest particle of an element that retains the properties of that element

Physics

1 answer:

Vika [28.1K]3 years ago

5 0

Answer:

Explanation:

Atom, smaller than that and you get into subatomic particles which don't really have the properties of elements they make up.

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What are 5 of the elements in the periodic table

ankoles [38]

Hydrogen, Carbon, Oxygen, Argon, Helium

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Pilings are driven into the ground at a building site by dropping a 2250 kg object onto them. What change in gravitational poten

den301095 [7]

Answer: 324.135 kJ

Explanation:

Given

Mass of dropping is $m=2250\ kg$

The initial height of dropping is $h_1=16\ m$

The final height of dropping $h_2=1.3\ m$

Gravitational potential energy is the function of height i.e.

$\Rightarrow \text{G.E.}=mgh$

Change in Gravitational Energy is

$\Rightarrow \Delta \text{G.E.}=mg(h_1-h_2)=2250\times 9.8\times (16-1.3)\\\\\Rightarrow \Delta \text{G.E.}=3,24,135\ J\approx 324.135\ kJ$

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3 years ago

Which product forms from the synthesis reaction between calcium (Ca) and

cestrela7 [59]

Answer:

CaCl2

Explanation:

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1. What is the kinetic energy of a ball with a mass of 5 kg rolling<br> at 10 m/s?

Kazeer [188]

KE=1/2mv^2

KE= 0.5×5kg×10m/s^2

KE=250J

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3 years ago

A negatively charged rod is brought near a neutral metal sphere. Which of the following is true? A negatively charged rod is bro

Yuki888 [10]

Answer:

There is an attractive force between the rod and sphere.

Explanation:

When negatively charged rod is placed close to the metal sphere then due to the electric field of the rod the opposite free charge of metal sphere comes closer to the rod on one surface

While similar charge in the metal sphere move away from the rod due to repulsion of electric field of rod

This temporary charge distribution of the metal sphere is known as induction

And since opposite charge on the metal surface comes closer to the metal sphere so here we can say that the rod will attract the metal sphere

so here correct answer will be

There is an attractive force between the rod and sphere.

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