Answer:
0.3 mm
Explanation:
= Density of material
= Linear density of the material = 
Area = Area = 
r = Radius
The velocity of a wave is given by
It can be seen that the velocity is inversly proportional to the radius
So,
From the question
The radius of wire B is 0.3 mm
Answer:
20.6 K
Explanation:
The root mean square velocity is the square root of the average of the square of the velocity. It can be calculated using the following expression.
where,
: root mean square velocity
R: ideal gas constant
T: absolute temperature
M: molar mass
Then, we can find the temperature,
Easy my dude.
Impulse (J) is equal to the change in momentum of the ball. It is also equal to Force times Time:
J = Ft
J = (550 N)(0.03 s)
J = 16.5 Ns
Hope this helps! Please press “Thanks!”
Answer:
I believe c.
Explanation:
by process of elimination.
Answer:
True
Explanation:
A magnetohydrodynamic drive or MHD accelerator is a method which is used for propelling the vehicles using only by applying the electric and magnetic fields. It has no moving parts. It accelerates an electrically conductive propellant (liquid or gas) with magnetohydrodynamics.
Its working principle is same as an electric motor except that in an MHD drive, the moving rotor is replaced by the fluid acting directly as the propellant.
An MHD accelerator is reversible.
So, the statement is true.
