because the car returned to A the velocity is 0
D. The velocity is zero but the speed
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Concentration involves the relative amounts of solvent and solute in a solution, when strength is related to the extent to which a substance dissociates :))
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Answer:
1.6×10²⁰
Explanation:
An ampere is a Coulomb per second.
1 A = 1 C / s
The amount of charge after 5 seconds is:
5.0 A × 5 s = 25 C
The number of electrons is:
25 C × (1 electron / 1.6×10⁻¹⁹ C) = 1.6×10²⁰ electrons
Answer
19 m/s
Explanation
<u>Finding the velocity of the initial object</u>
Momentum=mass × velocity
P=m×v
4000=115 × v
v=4000/115 =34.78⇒35m/s
<u>Total momentum after the collision</u>
Because the momentum is conserved, the total momentum afterwards =4000kg-m/s
<u>Total mass after collision</u>
Total mass = mass of initial object + mass of second object
Total mass= 115+100= 215kg
<u>Finding new velocity after collision</u>
v=p/m
=4000/215
=18.60
=19m/s
