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3 years ago

4. ________ have a positive charge

1 answer:

8 0

A proton has positive charge of 1, that is, equal but opposite to the charge of an electron. A neutron, like the name implies, is neutral with no net charge. The charge is believed to be from the charge of the quarks that make up the nucleons (protons and neutrons).

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You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this state

posledela

Answer:

a) y₂ = 49.1 m , t = 1.02 s , b) y = 49.1 m , t= 1.02 s

Explanation:

a) We will solve this problem with the missile launch kinematic equations, to find the maximum height, at this point the vertical speed is zero

$v_{y}$ ² = $v_{oy}$ ² - 2 g (y –yo)

The origin of the coordinate system is on the floor and the ball is thrown from a height

y-yo = $v_{oy}² /2 g
 y- 0 = 10.0²/2 9.8
 y - 0 = 5.10 m
 
The height from the ground is the height that rises from the reference system plus the depth of the ground from the reference system
 y₂ = 5.1 + 44
 y₂ = 49.1 m
Let's use the other equation to find the time
 [tex]v_{y}$ = $v_{oy}$ - g t

t = $v_{oy}$ / g

t = 10 / 9.8

t = 1.02 s

b) the maximum height

y- 44.0 = $v_{y}$ ² / 2 g

y - 44.0 = 5.1

y = 5.1 +44.0

y = 49.1 m

The time is the same because it does not depend on the initial height

t = 1.02 s

7 0

3 years ago

Explanation for question i & ii. Thank you.

suter [353]

Do u know Chinese ?if yes I can explain to u easily

6 0

3 years ago

What did Charles Darwin’s conclude on the Galapagos Island? Plz answer fast

kvasek [131]

He discovered several species of finches that varied from island to island and it helped him make his theory of natural selection.

hope this helps !

3 0

3 years ago

Which of the following is a possible measurement of velocity? A. 25 m B. 25 m/s C. 25 m east D. 25 m/s east

Kazeer [188]

Answer is B.
Because velocity is vector quantity, so magnitud and direction are needed to define it.
Since velocity means the speed(magnitude) of some object in a given direction, so it’s units are usually measured by meters/ seconds

3 0

3 years ago

The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/sec2?

Lubov Fominskaja [6]

Answer: 3000 Newton

Explanation:

Mass of large car = 1000 kg.

Acceleration of the car = 3 m/sec2

Force = ?

Recall that force is the product of mass of an object and the acceleration by which it moves.

Thus, Force = Mass x Acceleration

Force = 1000 kg x 3 m/sec2

= 3000 Newton

Thus, 3000 Newton of force would be required to accelerate the car

8 0

3 years ago