People have diffrent body builds and bone structure
Answer:
495m
Explanation:
ANSWER
u
stone
=10m/s (initial velocity of stone)
t=11s
∴H=−ut+
2
1
gt
2
(H=height of baloon)
H=−10×11+
2
1
×10×121=605−110=495m
A concave is when the bump is pressed downwards; So if the image has a downward hole, then it's concave. If it's pressed upwards like a hill or mountain, then it's convex.
Answer:
Speed - scalar
Velocity - vector
Displacement - vector
Distance - scalar
Measurement - scalar
Measurement and direction - vector
60 m north - vector
100 m west - vector
200 m/s - scalar.
Answer:
Both rod have the same tensile stress
Explanation:
Given information,
The weight first rod, 
= 1000 N
The length of first rod, 
= 2.0 m
The weight second rod, 
= 500 N
The length of second rod, 
= 1.0 m
The equation of tensile stress, σ = 
where
σ = tensile stress (N/
or Pa)
F = Force (N)
A = Area (N/ or Pa)
so
σ1 = 
, A = 2πl
= 
= 
N/
now calculate σ2
σ2 = 
= 
= N/
σ1/σ2 = /
σ1/σ2 = 1
σ1 = σ2
Hence, the tensile stress of first and second rod are the same.
