please solve it and help me don't give wrong answer
Answers
1.- Similarity is that both the graphs shows uniform acceleration and dissimilarity is that in the irst graph the object starts from rest whereas in the second graph the object has some initial velocity.
2.- Length- 1.5cm
Speed- 2πL/60s
2π×1.5/60s
π×1.5/30s(2 cuts 60 and makes it 30)
ans-0.157cm/s
3.-Motion from O to A; u = 0, t = 2 sec, s = 20 m
Acceleration (a) = ?
s = ut + 1/2 at^2
(Using the 2nd equation of motion)
⇒20 = 0 + 1212 x a x (2)^2
⇒ 2a = 20
⇒ a = 10m/s^2
Motion from O to B
u = 0, S = (20 + 160) = 180 m,
t = 2 + 4 = 6 sec, a = ?
Again,
s = ut + 1212 at^2
180 = 0 + 1212 x a x (6)^2
180 = 18a
⇒ a = 10m/s2
This shows that body is moving with constant
acceleration.
Motion from O to C,
u = 0, t = 7 sec, a = 10 m/s^2 v = ?
v = u + at
⇒ y = 0 + 10 x 7
⇒ v = 70 m/s
4.- Accelaration(a)=-6m/s^2
Time(t)=2s
Final velocity(v) =0m/s
v=t+a
0=u-6×2
u=12m/s
s=ut+1/2×at^2
s=12×2+1/2×-6×4
s=12
5.- Q1=Object A- Uniform
Object B- NonUniform
Object C- Nonuniform
Q2=Maximum- Object C
Minimum- Object A
Q3=119 metre
6.-In the absence of golgi apparatus lysosomes would
not would not be produced and the accumulation of
dead and damaged organelles and molecules in cell
would ultimately result in the crll to death.
7.-Increase in Productivity
The Right Man in the Right Place
Dexterity and Skill
Inventions are facilitated
8.-When person drinks concentrated salt solution
then it eventually reaches to intestine. As salt
solution contains more solutes than nearby tissues,
then the water from those tissues start moving
to intestine. This process is endosmosis in which the
water molecules move from lower solute
concentration to higher solute concentration
through intestinal wall. Intestine cannot tolerate
strain due to extra incoming water and hence, the
extra water is spilled out through vomiting.
9.-Vacuoles are like storage bubbles which are found
mostly in plant cells. They occupy most of the
portion of plant cells. These are used for storage
of food or water. They also store toxic metabolic
by-products or end products of plant cells. Such
vacuoles are thrown out of the cell by exocytosis.
Osmotic pressure and turgidity are maintained by
vacuoles due to the presence of cell sap.
10.-Mitochondria are known as the “powerhouse of
the cell.” The organelle that is responsible for the
production of energy in a cell is the mitochondria.
This is the most vital part of the cell as it takes the
food and makes energy for the other parts of the
cell.