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tester [92]
3 years ago
5

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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A snail crawls 5 inches in 15 minutes. What is its speed in in./min?
ArbitrLikvidat [17]

Answer:

0.33m/min

Explanation:

speed=distance/time

speed=5/15

speed=0.33in/min

5 0
3 years ago
Read 2 more answers
A 3.39-kg block is sliding down a 7.92-kg frictionless incline. Both are initially moving to the right at 10.3 m/s. q7 (a) If th
Agata [3.3K]

Answer:

Final Speed of Incline = 5.549 m/s

Explanation:

To answer this question, we must remember the fact that any momentum gained by the block is equal to the momentum lost by the incline.

So lets start by find the initial and final momentum of the box in the horizontal direction:

Initial Momentum = mass * initial velocity

Initial Momentum = 3.39 * 10.3 = 34.917   kg*m/s

Final Momentum = mass * final velocity

Final Momentum = 3.39 * 21.4 = 72.546 kg*m/s

Change in momentum: 72.546 - 34.917 = 37.629 kg*m/s

This is equal to the momentum lost by the incline.

Initial momentum of incline = 7.92 * 10.3 = 81.576 kg*m/s

Final momentum of incline = 81.576 - 37.629 = 43.947 kg*m/s

Plugging this into the momentum equation to find the speed:

Final Speed * Mass = Final Momentum

Final Speed = 43.947 / 7.92

Final Speed = 5.549 m/s

3 0
3 years ago
The graph represents the displacement of an object from its starting point as a function of time t. The object is traveling alon
iragen [17]

Based on the given displacement vs time graph, the object is at rest at a time interval of: B. 2 to 3 seconds

<h3>What is a displacement vs time graph?</h3>

A displacement vs time graph can be defined as a type of graph that is used to graphically represent the distance traveled (covered) or displacement experienced by an object from its starting position with respect to the time when it has started moving.

In Science, a physical object being at rest simply means that the position of the object is not changing with respect to time. Thus, both the slope and velocity of the physical object would be equal to zero when it is at rest.

Between 0 to 2 seconds on the given displacement vs time graph (see attachment), this object is traveling at a constant, positive velocity. However, at a time interval of 2 to 3 seconds the object is at rest.

Read more on displacement vs time graph here: brainly.com/question/19144777

#SPJ1

6 0
2 years ago
When is the only time that an object has no gravitational potential energy
Rom4ik [11]
When it is not moving or on the ground
5 0
3 years ago
Read 2 more answers
A ball is projected vertically upward from the surface of the Earth with an initial speed of +49 meters per second. The ball rea
Furkat [3]

Answer:

376.5 m

Explanation:

we know that

s=ut + 1/2 at^2

so here

u=49 m/s

t=5s

and a=g=9.8 m/s^2

so

s= 49×5 +1/2 ×9.8× 5×5

= 254+ 122.5

s= 376.5

7 0
3 years ago
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