Answer:

Explanation:
First number is
Second number is 
We need to multiply the two numbers.

In scientific notation : 
Hence, this is the required solution.
Answer:5 Neither: both negative and positive charge are present simultaneously in all solid materials on Earth
Explanation:
When we rub a glass rod with silk cloth then some of the electrons from glass rods are stripped away to the silk cloth. These electrons are loosely bound to the silk rod that is why they easily transferred to silk cloth.
There is no net charge because the charge is induced when we rub the cloth and charge are separated therefore we able to notice these charges.
Answer:
xcritical = d− m1
/m2
( L
/2−d)
Explanation: the precursor to this question will had been this
the precursor to the question can be found online.
ff the mass of the block is too large and the block is too close to the left end of the bar (near string B) then the horizontal bar may become unstable (i.e., the bar may no longer remain horizontal). What is the smallest possible value of x such that the bar remains stable (call it xcritical)
. from the principle of moments which states that sum of clockwise moments must be equal to the sum of anticlockwise moments. aslo sum of upward forces is equal to sum of downward forces
smallest possible value of x such that the bar remains stable (call it xcritical)
∑τA = 0 = m2g(d− xcritical)− m1g( −d)
xcritical = d− m1
/m2
( L
/2−d)
A device that uses electricity and magnetism to create motion is called a "Motor" (which converts electric energy into mechanical energy) & <span>In a reverse process, a device that uses motion and magnetism can be used to create "Electromagnetism".
In short, 1st Blank = Motor
2nd Blank = Electromagnetism
Hope this helps!</span>
Answer:
The length of a tube and number of rounds are 0.848 m and
.
Explanation:
Given that,
Wavelength 
m = 160000
We need to calculate the length
Using formula of wavelength
Laser tube behave like closed pipe



Distance traveled by pulse of light in one back and fourth trip



We need to calculate the time
Using formula for time



We need to calculate the number of round
Using formula of number of round



Hence, The length of a tube and number of rounds are 0.848 m and
.