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3 years ago

What trends were seen in Mendeleev’s periodic table?

Physics

2 answers:

bagirrra123 [75]3 years ago

4 0

He arranged his periodic table by each elements atomic mass

katrin [286]3 years ago

3 0

He arranged his periodic table by each elements atomic mass

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Which of the objects have only potential energy?

vitfil [10]

Answer:

A raised weight.

Water that is behind a dam.

A car that is parked at the top of a hill.

A yoyo before it is released.

River water at the top of a waterfall.

A book on a table before it falls.

A child at the top of a slide.

Ripe fruit before it falls.

Explanation:

4 0

3 years ago

PLS ANSWER FAST THIS IS TIMED TEST AND WILL GIVE BRAINLY!!!

mylen [45]

Answer:

mass is 5 kg

Explanation:

F=m/a

M=f/a

F=5000

a=1000

5000/1000=5

6 0

3 years ago

Two large parallel metal plates carry opposite charges. They are separated by 0.20 m and the p.d. between them is 500 V. What is

Bezzdna [24]

Hi there!

We can use the following relationship between the Potential Difference and the Electric field:

$V = E d$

V = Potential Difference (500V)
E = Electric Field (V/m)
d = separation between plates (0.2 m)

We can rearrange the equation to solve for the electric field:
$E = \frac{V}{d}\\\\$

Plug in the given values.

$E = \frac{500}{0.2} = \boxed{2500 \frac{V}{m}}$

3 0

2 years ago

Two identical metal spheres a and b are connected by a plastic rod. both are initially neutral. 1.0×1012 electrons are added to

Ann [662]

The plastic rod is made of insulator (plastic), so it does not allow charges moving from one sphere to another. This means that all the electrons given to sphere A will remain on sphere A.

The number of electrons initially given to sphere A is $N=1.0 \cdot 10^{12}$ , and since the charge of 1 electron is $e=-1.6 \cdot 10^{-19} C$ , the net charge left on sphere A after the removal of the rod will be
$Q=N e = 1.0 \cdot 10^{12}(-1.6 \cdot 10^{-19} C)=-1.6.0 \cdot 10^{-7} C$

8 0

3 years ago

Read 2 more answers

The velocity of an object is equal to the distance divided by time. The equation is velocity = distance/time. If you wanted to c

Korolek [52]

Answer: C) divide: distance ÷ velocity

Explanation:

The velocity $V$ equation is distance $d$ divided by time $t$ :