When an object moves its length contracts in the direction of motion. The faster it moves the shorter it gets in the direction of motion.
The object in this question moves and then stops moving. So it's length first contracts and then expands to its original length when the motion stops.
The speed doesn't have to be anywhere near the speed of light. When the object moves its length contracts no matter how fast or slow it's moving.
Answer: Option A : Technician A
Explanation:
The statement/observation, "that the starter motor used to crank diesel engines can draw up to 400 amps of current" made by Technician A is correct.
A diesel engine uses up to 400+ Amperes of electricity to start up a diesel engine in the ignition chamber of motor engine.
B.
how electric charges can be used to create a magnetic field
(how I know, just took it, the test I mean)
Number of atoms equal the number of molecular orbitals as each atom has 1 atomic orbital and 1 electron.
Therefore,
Number of atoms = (mass/molar mass)*Avogadro's number = (7.90/22.99)*1.36*10^23 = 4.67*10^22 atoms.
Then,
Number of molecular orbitals = 4.67*10^22
Explanation:
The SI unit of measurement for speed is metres per second (m/s) .
Speed : The distance travelled by a body per unit time is know as speed.
Hope it will help.
