The kinetic energy is greater on the second hill
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Answer:
a) # lap = 301.59 rad
, b) L = 90.48 m
Explanation:
a) Let's use a direct proportions rule (rule of three). If one turn of the wire covers 0.05 cm, how many turns do you need to cover 24 cm
# turns = 1 turn (24 cm / 0.5 cm)
# laps = 48 laps
Let's reduce to radians
# laps = 48 laps (2 round / 1 round)
# lap = 301.59 rad
b) Each lap gives a length equal to the length of the circle
L₀ = 2π R
L = # turns L₀
L = # turns 2π R
L = 48 2π 30
L = 9047.79 cm
L = 90.48 m
A boiling pot of water (the water travels in a current throughout the pot), a hot air balloon (hot air rises, making the balloon rise) , and cup of a steaming, hot liquid (hot air rises, creating steam) are all situations where convection occurs.
Answer:
<h3>0.445</h3>
Explanation:
In friction, the coefficient of friction formula is expressed as;
![\mu = \frac{F_f}{R}](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Cfrac%7BF_f%7D%7BR%7D)
Ff is the frictional force = Wsinθ
R is the reaction = Wcosθ
Substitute inti the equation;
![\mu = \frac{Wsin \theta}{W cos\theta} \\\mu = \frac{sin \theta}{cos\theta} \\\mu = tan \theta](https://tex.z-dn.net/?f=%5Cmu%20%3D%20%5Cfrac%7BWsin%20%5Ctheta%7D%7BW%20cos%5Ctheta%7D%20%5C%5C%5Cmu%20%3D%20%5Cfrac%7Bsin%20%5Ctheta%7D%7Bcos%5Ctheta%7D%20%5C%5C%5Cmu%20%3D%20tan%20%5Ctheta)
Given
θ = 24°
![\mu = tan 24^0\\\mu = 0.445\\](https://tex.z-dn.net/?f=%5Cmu%20%3D%20tan%2024%5E0%5C%5C%5Cmu%20%3D%200.445%5C%5C)
Hence the coefficient of kinetic friction between the box and the ramp is 0.445
means that a body is in motion, and its velocity is measured in meters per second. And, that velocity is increasing by two meters per second, every second.