Answer:
Ventricular systole
Explanation:
This contraction causes an increase in pressure inside the ventricles, being the highest during the entire cardiac cycle. The ejection of blood contained in them takes place. Therefore, blood is prevented from returning to the atria by increasing pressure, which closes the bicuspid and tricuspid valves.
Answer:
Sound energy (that is, mechanical vibrational waves passing through an elastic medium) is a combination of kinetic and potential energies. As the wave compresses the medium (storing elastic potential energy) the medium comes to rest (no motion so no kinetic energy).
Explanation:
Hope this helps :D
Answer:
h = 5.05 m
Explanation:
given,
mass of pole vaulter, m = 64 Kg
speed of the vaulter,V = 10.2 m/s
horizontal component of velocity in air, v = 1 m/s
height of the jump,h = ?
using energy conservation
initial height of the vaulter is equal to zero.
h = 5.05 m
height of the jump is equal to 5.05 m.
Answer:
A. electromagnetic energy
B. The cell wall and the central vacuole
C. mitochondria
Answer:
A)
B)
Explanation:
= diameter of the spherical chamber = 5.50 m
Volume of the spherical chamber is given as
= density of the seawater = 1025 kg m⁻³
Part A)
Force of buoyancy by seawater on the chamber is given as
Part B)
= tension force in the cable in upward direction
= mass of the chamber = 87600 kg
Weight of the chamber is given as
Using equilibrium of force in the vertical direction, we have
