If the magnetic field is measured in the opposite direction it could produce a negative number. Negative reading value means that the field is in the opposite direction of the assumed direction.
The procedure asks us to record the absolute value of magnetic field because it will give us the magnitude of the magnetic field. If the magnetic field is measured in the opposite direction it could produce a negative number.
The negative sign represents the fact that any current generated by a changing magnetic field in a coil produces a magnetic field that opposes the change in the magnetic field that induced it. This phenomenon is known as Lenz's law.
To learn more about Magnetic Fields,
brainly.com/question/19542022
#SPJ4
Decreasing the trains velocity will DECREASE the kinetic energy
Answer:
Gravity
Explanation:
Gravity pulls things down to earth and it is a force
The correct answer is amplitude
This question involves the concepts of general gas equation and pressure.
The force exerted by the gas on one of the walls of the container is "74.08 KN".
First, we will use the general gas equation to find out the pressure of the gas:
where,
P = Pressure of the gas = ?
V = Volume of cube = (side length)³ = (10 cm)³ = (0.1 m)³ = 0.001 m³
n = no. of moles = 3 (since molecules equal to avogadro's number make up 1 mole)
R = general gas constant = 8.314 J/mol.K
T = Absolute Temperature = 24°C + 273 = 297 K
Therefore,
P = 7407.78 KPa
Now, the force on one wall can be given as follows:
where,
A = area of one wall = (side length)² = (0.1 m)² = 0.01 m²
Therefore,
<u>F = 74.08 KN</u>
<u></u>
Learn more about the general gas equation here:
brainly.com/question/24645007?referrer=searchResults