Answer:
Explanation:
a )
one rotation per 24 hours
Time period of rotation of the earth T = time / no of rotation
T = 24 x 60 x 60 s / 1
= 86400 s .
b )
angular velocity = angle of rotation in radian / time
in one rotation , angle made at the centre = 2π radian
= 2 x 3.14 radian
angular velocity ω = 2π / T
= 2 x 3.14 / 86400 radian / s
= 72.68 x 10⁻⁶ radian / s
c )
Relation between linear and angular velocity is as follows
v = ω x R where R is radius of the earth and v is linear velocity .
linear velocity = 72.68 x 10⁻⁶ x 6.4 x 10⁶ m /s
= 465.152 m /s
=
Answer:
inner core ,outer core,and mantle
The answer to this question is C. The reason why this is an incorrect statement is that the Doppler effect takes into account two moving objects. In this scenario, both the source and the listener are stationary to the frequency of the sound waves will not change due to the Doppler effect. For the other answers, the frequency of sound waves is not affected by nature of the medium. The distance between a sound source and listener does not alter the frequency of the sound wave. The frequency of the sounds waves remains the same to the listener.
Answer:more than g I’m 99.9 % sure of it bc if you just drop the ball versus throwing the ball downward which is faster , throwing the ball downward so more than g hope this helps
Explanation:
Answer:
T=26.03 N
Explanation:
Given that
Distance between poles = 12 m
Mass of block m= 4 kg
Sag distance = 5 m
Lets take tension in the clothesline is T.
The component of tension in vertical direction will be T cosθ.
By force balancing
2 T cosθ = 40
here
θ=39.80°
2 T cos39.8 = 40
T=26.03 N