Answer: 0.01 m
Explanation: The formulae for capillarity rise or fall is given below as
h = (2T×cosθ)/rpg
Where θ = angle mercury made with glass = 50°
T = surface tension = 0.51 N/m
g = acceleration due gravity = 9.8 m/s²
r = radius of tube = 0.5mm = 0.0005m
p = density of mercury.
h = height of rise or fall
From the question, specific gravity of density = 13.3
Where specific gravity = density of mercury/ density of water, where density of water = 1000 kg/m³
Hence density of mercury = 13.3×1000 = 13,300 kg/m³.
By substituting parameters, we have that
h = 2×0.51×cos 50/0.0005×9.8×13,300
h = 0.6556/65.17
h = 0.01 m
Answer:
kinematics explains the terms like acceleration, velocity, and position of the objects while in motion.
Some important parameters in kinematics are displacement, velocity, and time.
Explanation:
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The penny will reach terminal velocity at 50 ft. Then it will travel 25 mph till it reaches ground.
Answer:
29.76245 rad/s², -117.80972 rad/s²
28.2743 rad/s
3.95833
Explanation:
= Final angular velocity
= Initial angular velocity
= Angular acceleration
= Angle of rotation
t = Time taken
Equation of rotational motion
Angular acceleration during speed up is 29.76245 rad/s²
Angular acceleration during spin down is -117.80972 rad/s²
Angular speed is given by
Maximum angular speed reached by the flywheel is 28.2743 rad/s
The ratio would be 
Bar magnets have 2 poles. I think. Answer: first choice
