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3 years ago

Describe the process that early periodic table organizers used to try and put elements into some sort of order

1 answer:

8 0

Answer: Mendeleev arranged the elements in his periodic table in <em>order of increasing atomic mass.</em> In the modern periodic table, elements are arranged <em>in order of increasing atomic number</em>

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A car has a kinetic energy of 5.32*10^5 j when traveling at a speed of 20 m/s what is its mass

Maslowich

Answer: Mass of car is 2660kg

Explanation:

Use equation for Kinetic ene)rgy :

Ek=(m*V²)/2

from this eqation you can get mass

m*V²=Ek*2

m=Ek*2/v²

Ek=5.32*100000J

V=20m/s

m=?

m=2*5.32*100000J/(20m/s)²

m=2660kg or 2.66t

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3 years ago

This photo shows sugar dissolved into a solution with a _______ at the bottom of the jar.

prohojiy [21]

Answer:

Explanation:

It dose not dissolve

6 0

3 years ago

Read 2 more answers

Does cross transfer occur when fibers are transferred from the victim to the suspect

lesantik [10]

When two people come in contact or when contact occurs with an item from the crime scene, the possibility exists that a fiber transfer will take place. This does not mean that a fiber transfer will always take place. Certain types of fabric do not shed well (donor garments), and some fabrics do not hold fibers well (recipient garments). The construction and fiber composition of the fabric, the duration and force of contact, and the condition of the garment with regard to damage are important considerations.

Hope this helps.

5 0

3 years ago

Using a rope that will snap if the tension in it exceeds 387 N, you need to lower a bundle of old roofing material weighing 449

Anni [7]

Answer:

(a) $a\approx1.4 m.s^{-2}$

(b) $v\approx 4.133 m.s^{-1}$

Explanation:

Given:

Limiting tension of snapping of the rope, T= 387 N

Weight of the object to be lifted, $w=449 N$

∴mass, $\Rightarrow m= 45.8163 kg$

height of letting down the weight, h = 6.1 m

(a)

Now,

The force to be compensated for being on the verge of snapping:

(T-w) = 62 N

Therefore, we need to produce and acceleration equivalent to the above force.

∵ $F=m.a$

$62=45.8163\times a$

$a= \frac{62}{45.8163}$

$a\approx 1.4 m.s^{-2}$

(b)

From the equation of motion ,we have:

$v^{2} =u^{2} +2a.s$ ....................(2)

where:

u= initial velocity= 0 (here, starting from rest)

v= final velocity = ?

$a= 1.4 m.s^{-2}$

s= displacement =h =6.1 m

Now, putting the values in eq. (2)

$v^2= 0^2 + 2\times 1.4\times 6.1$

$v\approx 4.133 m.s^{-1}$ is the velocity with which the body will hit the ground in the given conditions.

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4 years ago

Consider the three inclines shown in the figure. The vertical line is an incline with a 90° angle. (Inclines with 90° angles do

const2013 [10]

The final speed of C is equal to that of B.

The travel time of A is less than that of B.

The final speed of B is equal to that of A.

The travel time of C is greater than that of B.

The final speed of A is equal to that of C.

The travel time of C is greater than that of A.

<h3>What is speed?</h3>

The speed of any moving object is the ratio of the distance covered and the time taken to cover that distance.

Consider the three inclines shown in the figure (attached below). The vertical line is an incline with a 90° angle. All three inclines are frictionless. Three small identical objects are released from the top of the inclines.

When the objects are at the same height, they travel with the same height. The travel time is directly proportional to the incline.

Thus, all the statements are completed.

Learn more about speed.

brainly.com/question/7359669

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4 0

2 years ago