The following formula gives the connection between the force, the mass and the acceleration:
F=ma
In our case we know the force and the mass. F=20N and m=10kg
a=F/m
a=20m/s^2/10=2<span>m/s^2</span>
Yes it is true medium moves parallel to wave motion.
Answer:
By applying relative small force to the smaller piston
Explanation:
If a car sits on top of the large piston, it can be lifted by applying a relatively small force to the smaller piston, the ratio of the forces being equal to the ratio of the areas of the pistons
Our Sun is one of many stars in the Milky Way galaxy. Earth is closer to the Sun than any other star. This is evident because " we rely on the Sun's radiant energy on Earth".
<u>Option: B</u>
<u>Explanation:</u>
The Sun produces much radiant energy which is distributed as light to the Earth. Plants supports only process called photosynthesis for their food production, transform the electromagnetic energy in sunlight into chemical energy for their food. Radiant electromagnetic waves can be either visible or invisible.
Maximum solar radiation is absorbed by the atmosphere, but much of what hits the surface of the earth is emitted back into the atmosphere for heat energy to result. Dark colored items like asphalt consume radiant energy more easily than objects colored with light.
Answer:
0.4757 mm
Explanation:
Given that:
Load P = 223,000 N
the length of the height of the aluminium column = 1.22 m
the diameter of the aluminum column = 10.2 cm = 0.102 m
The amount that the column has shrunk ΔL can be determined by using the formula:
where;
A = πr²
2r = D
r = D/2
r = 0.102/2
r = 0.051
A = π(0.051)²
A = 0.00817
Also; the young modulus of aluminium 
is:
ΔL = 4.757 × 10⁻⁴ m
ΔL = 0.4757 mm
Hence; the amount that the column has shrunk is 0.4757 mm
