For this case we have the following measures in the international system:
- <em>For the length:
</em>
It is a unit that is used to measure the length of any object: Meter.
The mass in the international system is denoted by: kilogram. It is used to have an approximate idea of the weight of objects.
The measure in the international system is: Seconds. It is used to know how much time elapses in an event to be studied.
- <em>For the temperature:
</em>
The measure in the international system is: Kelvin. It is used to get an idea of how cold or hot an object, process, place, person can be.
Answer:
Length: meter
Mass: Kilogram
Time: Second
Temperature: Kelvin
Refers to the attachment for the answer.
Let us assume that the object of mass m is kept on the Inclined plane.
Now, there will act one force called as Component of the Weight along the Incline which is given by the Relation,
mgsinθ,
where θ is the angle which the incline makes with the surface or Angle of the Incline.
Now, If there will be no friction and the object is moving along the incline
Force = mgsinθ
⇒ ma = mgsinθ
∴ a = gsinθ
This case is valid when the angle of the Incline is greater than the angle of repose, which means the object is moving with no cause or acing of the force.
But sometimes when the object does not move without the action of force, I mean that the angle of repose is greater than the angle of the incline, then we need to apply the force so that the object can move then,
Force applied = mgsinθ
∴ a = gsinθ
It will change the cases when friction is involved.
Now, For velocity, It can be found by using the equation of Motions. Time, Distance or initial velocity, etc must be given if the question will be asked related to the velocity. So by using them, you can find that.
Answer:
Explanation:
Given
Initial Flow of water
density
Initial velocity
Final velocity
Initial mass flow rate
Let area of cross section of Two streams after striking be A
Conserving Flow
or Flow rate after splitter splits in to half
conserving momentum in x direction
Final momentum in x direction
Change in momentum
F=1409.24 lbf
change of momentum in Y direction is zero as the two flows oppose thier motion after striking with splitter.
Answer:
Explanation:
Using the lens formula
1//f = 1/u+1/v
f is the focal length of the lens
u is the object distance
v is the image distance
For convex lens
The focal length of a convex lens is positive and the image distance can either be negative or positive.
Given f = 20cm and u = 10cm
1/v = 1/f - 1/u
1/v = 1/20-1/10
1/v = (1-2)/20
1/V = -1/20
v = -20/1
v = -20 cm
Since the image distance is negative, this shows that the nature of the image formed by the convex lens is a <u>virtual image</u>
<u></u>
For concave lens
The focal length of a concave lens is negative and the image distance is negative.
Given f = -20cm and u = 10cm
1/v = 1/f - 1/u
1/v = -1/20-1/10
1/v = (-1-2)/20
1/V = -3/20
v = -20/3
v = -6.67 cm
Since the image distance is negative, this shows that the nature of the image formed by the concave lens is a <u>virtual image</u>
<u></u>