Answer:
Density does not change when you divide the cube, due to the principle of mass conservation. The density given in this case by 3 
, will remain the same.
The only way for it to change, will be if you compressed the block, so now the same mass will be compressed in less volume, or you add heat to the system.
Explanation:
Not a full question that can be answered sorry:/
Answer:
2.86×10⁻¹⁸ seconds
Explanation:
Applying,
P = VI................ Equation 1
Where P = Power, V = Voltage, I = Current.
make I the subject of the equation
I = P/V................ Equation 2
From the question,
Given: P = 0.414 W, V = 1.50 V
Substitute into equation 2
I = 0.414/1.50
I = 0.276 A
Also,
Q = It............... Equation 3
Where Q = amount of charge, t = time
make t the subject of the equation
t = Q/I.................. Equation 4
From the question,
4.931020 electrons has a charge of (4.931020×1.6020×10⁻¹⁹) coulombs
Q = 7.899×10⁻¹⁹ C
Substitute these value into equation 4
t = 7.899×10⁻¹⁹/0.276
t = 2.86×10⁻¹⁸ seconds
Answer:
B Electrocoagulation.
It is a process that involves the use of high frequency current to cause coagulation usually of protiens in tissues and also the destruction of abnormal tissues making use of the heat generated by the electric current. This tissue could be a tumor or some other kind of lesion.
Explanation:
The passage of electric current through the electrode (second electrode that has been sterilized) in contact with the tissue causes the molecules within them to vibrate. This leads to a sharp increase in the temperature of the tissue due to the heat generated by the electric current. This is what causes the coagulation of the proteins within the tissue and also burns the tissue thereby effectively destroying it.
Electrocoagulation also called electrocautery, electrofulguration, and fulguration.
Answer:
When a simple pendulum makes 10 oscillation in 20 seconds, the time taken for each osillation
=20/10
= 2seconds
hence, as the time period is calculated to be 10secondd, the frequency of oscillation
=1/T
=1/2
= 0.5 here's
