Answer:
a. ac = 1844.66 m/s²
b. Fc = 265.63 N
Explanation:
a.
The centripetal acceleration of the ball is given as follows:
ac = v²/r
where,
ac = centripetal acceleration = ?
v = speed of ball = (87 mph)(1 h/ 3600 s)(1609.34 m / 1 mile) = 38.9 m/s
r = radius of path = 82 cm = 0.82 m
Therefore,
ac = (38.9 m/s)²/0.82 m
<u>ac = 1844.66 m/s²</u>
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b.
The centripetal force is given as:
Fc = (m)(ac)
Fc = (0.144 kg)(1844.66 m/s²)
<u>Fc = 265.63 N</u>
The parts of the cell are mitochondria, lysosomes, ribosomes etc. Their functions are as follows :
(1) Vesicle is a one of the large structure within the cell. Its function is to transfer materials out of the cell.
(2) Mitochondria is also called the power house of the cell. Its function is to break down sugar to supply energy for the cell.
(3) Lysosomes are the suicidal bag of the cell. It breaks down waste and other materials of the cell.
(4) Endoplasmic reticulum helps to produce, process and transport proteins in vesicles to the Golgi apparatus.
The work done to "HOLD" a load of bricks at any height is zero.
Work is done only when force acts through a DISTANCE.
The work done to LIFT 30 kg of anything to 20m higher than
it already is, is
(force) · (vertical distance)
= (mass) · (gravity) · (vertical distance)
= (30 kg) · (9.8 m/s²) · (20 m)
= 5,880 joules
Answer:
Explanation:
As we know by energy conservation
All its kinetic energy will convert into thermal energy to raise its temperature
now divide both sides by mass of the object
so change in temperature is given as
