Answer:
ΔQ = - 762 J (Negative Sign shows heat transfer from the system)
Explanation:
The heat transferred to or from the system can be given by using First law of Thermodynamics as follows:
where,
ΔQ = Heat Transferred to or from system = ?
ΔU = Change in Internal Energy of System = Change in Thermal Energy
ΔU = - 240 J (negative sign due to decrease in energy)
W = Work done on system = -522 J (negative sign due to work done "on" system)
Therefore,
<u>ΔQ = - 762 J (Negative Sign shows heat transfer from the system)</u>
Answer:
a = -04978 m / s²
Explanation:
For this exercise we can use the kinematics equations, as the initial speed, distance and time indicate, we can use
x = x₀ + v₀ t + 1 /2 a t²
½ a t² = x-x₀ - v₀ t
a = (x-x₀ - v₀ t) 2 / t²
let's reduce the magnitudes to the SI system
x₀ = 1000 mm = 1 m
x = 5000mm = 5m
let's calculate
a = (5 - 1 - 15 60) 2/60²
a = -04978 m / s²
negative sign indicates that braking is related
Answer:
B erosion
Explanation:
Erosion would usually require water
Answer:
If it was only 10 degrees the seasonal changes would lessen and vise versa for 50. meaning the seasonal changes would become more extreme
Explanation:
