Density = mass / volume D=m/v
Mass= 12.6 g
Volume=(4.1 cm)³ = 4.1 cm x 4.1 cm x 4.1 cm = 68.921 cm³
Density =12.6 g / 68.921 cm³ = 0.1828 g/cm³
Answer:
d= 1.5 g/cm3
Explanation:
datos
m= 30g
v= 20cm3
d=?
formula
d= m / v
solución
d= 30g / 20cm3 = 1.5g/cm3
Answer:
The Wednesday test launch stored more potential energy, and launched the spacecraft at a faster speed because the stronger magnetic field closer to the magnet resulted in a greater increase in potential energy.
Explanation:
You say 42m/s times (7s) the answer is 294m/s2 squares cause you times not sure but I am just a nice er at this sry if it’s wrong :)
Answer: It remains the same
Explanation:
The Conservation of Momentum principle establishes that the initial momentum must be equal to the final momentum :
(1)
In the case of the train, its initial momentum is:
(2)
Where is the mass of the train and is the initial velocity of the train
And, its final momentum is:
(3)
Where:
since we are told the mass of the train is doubled
since we are told the velocity of the train goes to half
Hence:
(4)
(5)
(6)
This means the momentum of the train remains the same.