The answer is A. Alternating current regularly reverses direction. Direct current flows in only one direction.
The forces are Andrew poking the marble and then gravity pulling the marble downward
Germinal stage. 1.1 Fertilization. 1.2 Cleavage. 1.3 Blastulation. 1.4 Implantation. 1.5 Embryonic disc.
Gastrulation.
Neurulation.
Development of organs and organ systems.
Answer:
Case I: 12.617 L/s
Case II: 161.406 cubic meters per hour
Case III: 1.062 Pound inches
Explanation:
<u>Given:</u>
- Speed of water flow = 200 gallons per minute
- Speed of air blow = 95 cubic feet per minute
- Measure of Torque = 12 Newton centimeter
<u>Assumptions:</u>
- 1 US gallon = 3.785 L
- 1 min = 60 s
- 1 ft = 0.3048 m
- 1 h = 60 min
- 1 inch = 2.54 cm
- 1 N = 0.2248 lb
Case I:

Case II:

Case III:

Answer:
The magnetic field is 
Explanation:
From the question we are told that
The mass of the metal is 
The current is 
The distance between the rail(length of the rod ) is 
The coefficient of kinetic friction is 
Generally the magnetic force is mathematically represented as

Given that the rod is moving at a constant velocity, it
=> 
Where
is the kinetic frictional force which is mathematically represented as

So

=> 
substituting values
=> 
=> 