Answer:
<u>Drag force</u> is the frictional force needed to slow an object in motion
Explanation:
Answer:
The skin releases sweat
Explanation:
The body temperature is necessary to maintain homeostasis. Skin controls body temperature by sweating when it is too heated.
I believe the answer is b) slowly heating the surface
Answer:
a = 17.68 m/s²
Explanation:
given,
length of the string, L = 0.8 m
angle made with vertical, θ = 61°
time to complete 1 rev, t = 1.25 s
radial acceleration = ?
first we have to calculate the radius of the circle
R = L sin θ
R = 0.8 x sin 61°
R = 0.7 m
now, calculating at the angular velocity


ω = 5.026 rad/s
now, radial acceleration
a = r ω²
a = 0.7 x 5.026²
a = 17.68 m/s²
hence, the radial acceleration of the ball is equal to 17.68 rad/s²
Answer:

Explanation:
From the conservation of mechanical energy




Solve to velocity v2



