Answer:
-24.76 kJ/mol
Explanation:
given,
mass of solid magnesium burned = 0.1375 g
the temperature increases by(ΔT) 1.126°C
heat capacity of of bomb calorimeter (C_{cal})= 3024 J/°C
heat absorbed by the calorimeter
heat released by the reaction
energy density will be equal to heat released by the reaction divided by the mass of magnesium
Energy density =
Energy density = -24.76 kJ/mol
heat given off by burning magnesium is equal to -24.76 kJ/mol
Answer:
The fluid moves and special cells in the nerve send an impulse.
Answer:
Option B: the period during which a solid is not changing state; its temperature is increasing
Explanation:
The temperature is defined as a measurement of the speed at which particles of matter are moving (their kinetic energy)
Therefore for an increase of kinetic energy to take place, and increase of temperature has to occur.
Answer:
Explanation:
The formula that relates angular displacement with angular acceleration is:
We can obtain from the definition of angular acceleration:
Putting all together:
Which, since we want the angular acceleration, is:
And for our values is:
Answer:
201.06m/s
Explanation:
The solve this problem, we must understand that momentum must be conserved.
This implies that the starting momentum must be the same as the ending momentum. Since we are dealing with an inelastic collision:
Momentum of Plane + Momentum of truck = Momentum of plane + truck
Mp x Vp + Mt x Vt = V(Mp + Mt)
M is the mass
V is the velocity
t is truck
p is the plane
(540000 x 210) + (24000 x 0) = V (540000+24000)
113400000 = 564000V
V = 201.06m/s