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Dmitrij [34]
3 years ago
7

What us fission and fusion

Physics
1 answer:
Leviafan [203]3 years ago
6 0
If you mean nuclear, fission is a radioactive isotope losing protons or "radioactive decay"
whereas nuclear fusion is where 2 atoms hit each other and combine, 
like on the sun where hydrogen hits each other and makes helium.  
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A projectile was fired horizontally from a cliff 20m above the ground. If
Montano1993 [528]

The initial velocity of the projectile is 19.8m/s

Explanation:

First, find time.

From our kinematics equations:

delta y = Vi•t + (1/2)at^2

rearrange,

t = sqrt[(2•delta y)/a]

t = sqrt[(2•20m)/9.8m/s^2]

t = 2.02s

Next, plug time into new kinematics equation to solve for the Vi in the x direction (horizontal)

delta x = Vi•t + (1/2)at^2

delta x = Vi•t

Rearrange:

Vi = delta x/t

Vi = 40m/2.02s

Vix = 19.8m/s

8 0
3 years ago
A negative charge feels a force when stationary in an electric field. moving parallel to an electric field. moving parallel to a
Yuki888 [10]

Answer:

<u>stationary in an electric field. </u>

<u>moving perpendicular to a magnetic field.</u>

<u>moving perpendicular to an electric</u> <u>field.</u>

Explanation:

Negative charge: In physics, the term "negative charge" is defined as a phenomenon that consists of a surplus or different electrons in any field i.e magnetic or electric field.

However, the correct answer in the question above, would be:

<u>"stationary in an electric field". </u>

<u>"moving perpendicular to a magnetic field".</u>

<u>"moving perpendicular to an electric</u> <u>field".</u>

8 0
3 years ago
300N effort is applied to lift the load of 900N by using a first class lever. If the distance between the load and fulcrum is 20
Klio2033 [76]

Answer:

Effort=300N

Load=900N

Load distance=20m

Now,

Ed=(L*Ld)/E

Ed=(900*20)/300

Ed=1800/300

Ed=6m

Explanation:

7 0
2 years ago
Read 2 more answers
What is momentum equal to?
Setler [38]

Answer:

D

Explanation:

mass times velocity

hope this help

8 0
3 years ago
Susie rides down and to the right on a slide for a total displacement of -3m at an angle of 45 degrees above the ground. What wa
Svetlanka [38]

Susie's vertical displacement is 2.1 m

Explanation:

In order to solve this problem, we have to resolve the displacement vector along the vertical direction.

The vertical component of a vector is given by:

v_y = v sin \theta

where

v is the magnitude of the vector

\theta is the angle between the direction of the vector and the horizontal

Therefore, the vertical  component of the displacement in this problem is given by

d_y = d sin \theta

where

d = 3 m is the magnitude of the displacement

\theta=45^{\circ} is the angle between the  displacement and the horizontal

Substituting, we find

d_y = (3)(sin 45^{\circ})=2.1 m

Learn more about vector components:

brainly.com/question/2678571

#LearnwithBrainly

6 0
4 years ago
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