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eimsori [14]
3 years ago
12

Who was the first chemist to organize elements by atomic number? Johann Wolfgang Döbereiner Antoine Lavoisier Henry Moseley John

Newlands
Physics
2 answers:
Sliva [168]3 years ago
5 0

Answer: Henry Moseley

Explanation: On Edgenuity!

victus00 [196]3 years ago
3 0

Answer:

Dimitri Mendeleev

Explanation:

Mendeleev published his first periodic table of the elements in 1869, being the first periodic table in the whole world.

❤️<u><em>Hope this helps</em></u><em>!!!</em>❤️

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A basketball referee tosses the ball straight up for the starting tip-off. At what velocity (in m/s) must a basket ball player l
mamaluj [8]

Answer:4.93 m/s

Explanation:

Given

height to reach is (h )1.24 m

here Let initial velocity is u

using equation of motion

v^2-u^2=2ah

here Final Velocity v=0

a=acceleration due to gravity

0-u^2=2\left ( -g\right )h

u=\sqrt{2gh}

u=\sqrt{2\times 9.81\times 1.24}

u=\sqrt{24.328}

u=4.93 m/s

7 0
3 years ago
An arrow of mass 20 g is shot horizontally into a bale of hay, striking the hay with a velocity of 60 m/s. It penetrates a depth
goblinko [34]

From the question, The kinetic energy of the fired arrow is equal to the work done by the bale of hale in stopping the arrow.

We make use of the following formula

mv²/2 = F'd................... Equation 1

Where

  • m = mass of the arrow
  • v = velocity of the arrow
  • F' = average stopping force acting on the arrow
  • d = distance of penetration

Make F' the subject of the equation

F' = mv²/2d.................. Equation 2

From the question,

Given:

  • m = 20 g = 0.02 kg
  • v = 60 m/s
  • d = 40 cm = 0.4 m

Substitute these values into equation 2

  • F' = 0.02(60²)/(0.4×2)
  • F' = 72/0.8
  • F' = 90 N

Hence, The average stopping force acting on the arrow is 90 N

Learn more about average stooping force here: brainly.com/question/13370981

5 0
2 years ago
An embolus can cause which of the following?
QveST [7]
I think it’s C. Stroke if not then D
7 0
3 years ago
Joe rides his bicycle in a straight line for 2 hour with an average velocity of 13 km/h south, how far has he ridden?
dmitriy555 [2]

Answer:

ans is 3.125 km

i hope this is correct

8 0
3 years ago
Can someone help me?​
Leviafan [203]

Car X traveled 3d distance in t time.  Car Y traveled 2d distance in t time. Therefore, the speed of car X, is 3d/t,  the speed of car Y, is 2d/t. Since speed is the distance taken in a given time.

In figure-2, they are at the same place, we are asked to find car Y's position when car X is at line-A. We can calculate the time car X needs to travel to there. Let's say that car X reaches line-A in t' time.

V_x .t' = 3d\\ \frac{3d}{t} .t' = 3d\\ t'=t

Okay, it takes t time for car X to reach line-A. Let's see how far does car Y goes.

V_y.t = \frac{2d}{t} .t = 2d

We found that car Y travels 2d distance. So, when car X reaches line-A, car Y is just a d distance behind car X.

4 0
2 years ago
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