When water freezes, its volume increases by 9.05% (that is, ΔV / V0 = 9.05 × 10-2). What force per unit area is water capable of
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Answer
given,
mass of paint removed from the airline = 100 Kg
a) altitude of the airplane = 12000 m
energy saved to not to lift the plane = ?
U = m g h
U = 100 x 9.8 x 12000
U = 117.6 x 10⁵ J
U = 1.18 x 10⁷ J
b) Speed of the airplane = 250 m/s
U =31.25 x 10⁵ J
U = 3.125 x 10⁶ J
Answer :
The frictional force on the block from the floor and the block's acceleration are 10.45 N and 0.73 m/s².
Explanation :
Given that,
Mass of block = 3.50
Angle = 30°
Force = 15.0 N
Coefficient of kinetic friction = 0.250
We need to calculate the frictional force
Using formula of frictional force
(II). We need to calculate the block's acceleration
Using newton's second law of motion
Hence, The frictional force on the block from the floor and the block's acceleration are 10.45 N and 0.73 m/s².