Answer:
d. 2m to the right of the pivot
Explanation:
m1 = m
m2 = 0.5m
d1 = 1m
d2 = ?
from principle of moment,
CWM = ACWM
m × 1 = 0.5m × d2
d2 = m/0.5m
= 1/0.5
= 2m
The 2nd child will have to sit 2m to the right
The turning effect of a force is known as the moment. It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn.
The principle of moments states that when in
equilibrium the total sum of the anti clockwise
moment is equal to the total sum of the
clockwise moment.
When a system is stable or balance it is said to be in equilibrium as all the forces acting on the system cancel each other out.
In equilibrium
Total Anticlockwise Moment = Total
Total Anticlockwise Moment = TotalClockwise Moment
Answer:
a) x = 0.200 m
b)E = 3.84*10^{-4} N/C
Explanation:
DISTANCE BETWEEN BOTH POINT CHARGE = 0.5 m
by relation for electric field we have following relation
according to question E = 0
FROM FIGURE
x is the distance from left point charge where electric field is zero
solving for x we get
x = 0.200 m
b)electric field at half way mean x =0.25
E = 3.84*10^{-4} N/C
According to nebular hypothesis, the one that is true is :
B. Gas and dust flattened into disk shape
According to the hypothesis, outer planets are made up of Gases that was left after the sun is formed and planets are made up from the outer part of the disk
hope this helps
We need to use differant energy soureces that are renewable. THis is because at the moment most of the enrgy that we use is unrenewable, coal, oil, petrol etc. It takes millions of year to create and is burnt in a matter of minuetes. We need energy that is renewable so we can supply it quickly when we need it because all nonrenewable enrgy's are running out. Only in 1 million years if a fish dies now will it be compatable to turn into fuel. Wind power, solar power, movement energy are all renewable. THis is why it is very important we use those things. Hope this helped :-) Bonnie Year 7