Question 8 (1 point) The law of conservation of momentum states that:
a
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For an isolated system, the momentum of a system of particles remains unchanged before and after a collision,
For an isolated system, the momentum can change if outside forces are added.
Momentum = my
Impulse changes momentum.
For an isolated system, collisions are perfectly elastic
d

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

Explain what happens at the saturation point when adding salt to water at room temperature.

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.