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3 years ago

13

Using your Periodic Table, which element below has the smallest atomic radius? A.) Sodium, B.) Chlorine, C.) Phosphorus, D.) Iro

n

1 answer:

belka [17]3 years ago

4 0

Chlorine has the smallest atomic radius since the atomic radius decreases as you travel to the right and up

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A helicopter is ascending vertically with a speed of 5.10m/s. At a height of 105 m above the Earth, a package is dropped from a

Oksi-84 [34.3K]

Answer:

The time taken for the package to reach the ground is 20.6s

Explanation:

Given that the formula of distance is D = S×T where S represents soeed and T is time. So you have to substitute the following values into the formula :

$distance = speed \times time$

$let \: distance = 105 \\ let \: speed = 5.10$

$105 = 5.1 \times t$

$5.1t = 105$

$t = 105 \div 5.1$

$t = 20.6 \: second \: (3s.f)$

7 0

3 years ago

What type of device is a car engine?

Marianna [84]

<h3><u>Answer;</u></h3>

B.A heat engine that uses work to move heat

<h3><u>Explanation;</u></h3>

A heat engine involves a thermodynamic process that converts the heat supply in it into mechanical work.
A heat engine makes use of the properties of thermodynamics to transform heat into work. Gasoline and diesel engines, jet engines, and steam turbines that generate electricity are all examples of heat engine

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4 years ago

How do the lungs help maintain the body's pH<br> balance?

-Dominant- [34]

Answer:by removing carbon dioxide from the body

Explanation:

I just got it right

5 0

3 years ago

Describe how the properties of sound waves change as they spread out in a spherical pattern.

guapka [62]

They go up and down

4 0

3 years ago

Nikolay [14]

Answer:

16

Explanation:

The magnitude of the electrostatic force between two charged particles is given by

$F=\frac{kq_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1, q2 are the charges of the two particles

r is the separation between the particles

In this problem, the initial force between the particles is F.

Later, the distance between the two particles is increased by four, so

r' = 4r

So, the new force between the particles will be

$F'=\frac{kq_1 q_2}{(4r)^2}=\frac{kq_1 q_2}{16r^2}=\frac{1}{16}F$

So, the new force decreases by a factor of 16.

4 0

3 years ago