Answer:
If you don't have autism/deaf/anything like that you should be able to speak
Explanation:
Answer:
is greatest
Explanation:
Given:
Substitute , so
Then, get the common value from the equation.
So, the speed of the air is greatest.
Answer:
The correct solution is " %".
Explanation:
The given values are:
Pressure,
for copper,
As we know,
The Bulk Modulus (B) =
or,
The decrease in volume will be:
=
then,
=
On putting the values, we get
=
=
Answer:
1.7135 x 10^10 J / s
Explanation:
R = 20 cm = 0.2 m
e = 0.79
To = 15 degree C = 15 + 273 = 288 K
T = 200 degree C = 200 + 273 = 473 K
Energy radiated per unit time = A x e x (T^4 - To^4)
Power radiated = 4 x 3.14 x 0.2 x 0.2 x 0.79 x (473^4 - 288^4)
= 1.7135 x 10^10 J / s
The correct answer is the recoil velocity of the cannon is equal to 90m/s.