Answer:
Explanation:
average deceleration= ?
inial velocity:
final velocity:
time:
The first law of kinematics :
find a the subject of the formula
The deceleration about g(acceleration due to gravity) will be:
Answer:
Explanation:
The process is isothermic, as P V = constant .
work done = 2.303 n RT log P₁ / P₂
= 2.303 x 5 / 29 x 8.3 x 303 log 2 / 1 kJ
= 300.5k J
This energy in work done by the gas will come fro heat supplied as internal energy is constant due to constant temperature.
heat supplied = 300.5k J
specific volume is volume per unit mass
v / m
pv = n RT
pv = m / M RT
v / m = RT / p M
specific volume = RT / p M
option B is correct.
Answer:
14.7 Volt
Explanation:
C1 = 2.74 F, C2 = 7.46 F, C3 = 10.1 F
Here C1 and C3 are in parallel
So, Cp = C1 + C3 = 2.74 + 10.1 = 12.84 F
Now Cp and C2 are in series
1 / C = 1 / Cp + 1 / C2
1 / C = 1 / 12.84 + 1 / 7.46
C = 4.72 F
Let q be the total charge
q = C V = 4.72 x 40 = 188.8 C
Voltage across C2
V2 = q / C2 = 188.8 / 7.46 = 25.3 V
Voltage across C2 or c3
V' = V - V2 = 40 - 25.3
V' = 14.69
V' = 14.7 Volt
-- The potential difference (voltage) is the same across all components
that are connected in parallel.
-- The current is the same through all components that are connected in series.
Answer;
- Nuclear fusion
Explanation;
-Hydrogen bombs and stars both produce energy with the nuclear fusion. On other side, the Sun and other stars make heat and light by nuclear reactions.
-The first stage of a hydrogen bomb involves a fission explosion which in turn leads to a nuclear fusion. The extreme heat and pressure from the initial atomic blast force together deuterium and tritium (two light gases made of hydrogen). When they are forced together, some of the hydrogen atoms fuse to one another, creating helium.
-This process of fusion releases even more energy per unit of mass than fission does, and the energy released from the fusion reaction also feeds back into the fission reaction, increasing its output.