The volume increases. The molecules of that object gain kinetic energy hence colliding more and creating a bigger gap between each other.
Answer:
28.8m
Explanation:
Given parameters:
Time of fall = 2.4s
Acceleration due to gravity = 10m/s²
Unknown:
Height of cliff = ?
Solution:
To solve this problem, we use the expression:
H = ut + gt²
u is the initial velocity
t is the time taken
g is the acceleration
t is the time
H = 0x2.4 + x 10x2.4² = 28.8m
A = horizontal displacement of the humming bird = 1.2 m
B = vertical displacement of the humming bird = 1.4 m
C = net displacement of the humming bird from initial to final position = ?
In the triangle drawn , Using Pythagorean theorem
C = √(A² + B²)
inserting the values
C = √(1.2² + 1.4²)
C = √(1.44 + 1.96)
C = √(3.4)
C = 1.4 m
Hence the net displacement of hummingbird comes out to be 1.4 m
Answer:
Answer:
43.4J
Explanation:
We know that
Work done = total heat energy
But work done is force x distance
=> F = 19 x8.6 = 163.4 J
So the total heat. Will be Heat of cube + heat of floor = 163.4J
So that heat of floor will now be
floor = 163.4 J - 120 J = 43.4 Joules
Explanation:
It is an real machine because if efficiency is below100% it is real machine but if efficiency is 100% it is an ideal machine