Answer:
a = 1.962 m/s²
Explanation:
The frictional force applied on the car can be given by the following formula:
where,
f = frictional force = ma (according to Newton's Second Law)
μ = coefficient of friction = 0.2
R = Normal Reaction = Weight of car = mg
Therefore, equation becomes:
where,
a = maximum acceleration = ?
μ = coefficient of friction = 0.2
g = acceleration due to gravity = 9.81 m/s²
Therefore,
<u>a = 1.962 m/s²</u>
Answer:
The answer is "Option B and Option D"
Explanation:
Isopropyl alcohol has an air pressure of 22,39 units with such a water contact angle of 72,86 units.
The melting points of Isopropyl alcohol are higher than water because of the weaker forces between the previously studied.
The flatter meniscus is indeed the isopropyl ethanol so because forces between the particles are smaller.
Answer:
The dust does have any third charge.
Explanation:
In the context, the glass rod gets positively charged and so it induces a negative charge on the dust particles which are neutral. Thus the face of the dust particle which is near to the rod becomes negative charge and the opposite face of the dust gets equal positive charge and hence it ensures the neutrality of the dust particle but still being attracted to the glass rod.
And in the case of the negatively charged silk, the silk induces or gives positive charge to the dust particle which is neutral in charge. The face which is near to the silk gets positive charge and the other face becomes negative charge, again ensuring its neutrality and being attracted to the glass rod.
This shows how both positive charged rod and negatively charged silk attracts the neutral dust particle.
Answer:
When object falls freely we can say
its initial speed will be ZERO
and its acceleration due to gravity must be
a = g = 9.8 m/s^2a=g=9.8m/s2
Now we need to find the distance of free fall in 3 s of time
So here we will use kinematics
y = v* t + \frac{1}{2} at^2y=v∗t+21at2
now we will plug in all values in it
y = 0 + \frac{1}{2}* 9.8 * 3^2y=0+21∗9.8∗32
y = 44.1 my=44.1m
So it will fall by total distance of 44.1 m