Atoms in a magnet are arranged according to their magnetic poles. Their north and south poles determine how the atoms in the magnet are arranged.
The correct option is this: PHYSICAL CHANGES: BREAKING THE STICKS AND BOILING THE WATER. CHEMICAL CHANGE: LIGHTNING THE FIRE.
In chemistry, a physical change refer to a change in which no new material is formed while a chemical change refers to a change in which a new material is formed. Boiling of water does not change water into another thing, even when the water changes to vapor, it will still turn to water again when it cools down, so boiling is a physical change, so also the breaking of sticks. Lightening a fire on the other hand is a chemical change because a new material is formed and the original material can not be recovered. Putting fire on the sticks will turn the sticks to ashes and the sticks can not be recovered from the ashes, so this is a chemical change.
By definition, we have to:
Where,
p: linear momentum
m: mass of the object
v: object speed
Therefore, knowing the mass of an object and its speed, we have the linear momemtum of the object.
In general, it is useful to calculate the momentum of objects in conservation problems to find the velocity before or after the collision of two objects.
Answer:
The measure of an object's mass and velocity is called momentum.
d. momentum
Answer:
e = 10 V
Explanation:
given,
number of the coaxial loops = 10
Cross sectional area = 0.5 m²
magnitude of magnetic field =
B = 3 T + (2 T/s)*t.
B = ( 3+ 2 t ) T
induced potential difference = ?
At time = 2 s
we know,
induced emf
∅ = B . A
e = -10 V
magnitude of induced emf
|e| = |-10 V|
e = 10 V
the induced potential difference in the loop = e = 10 V
No, they actually travel through the vacuum of outer space, but it also requires the absence of a material sedium.
