20/40=0.5 g/cm^3 becuase, mass/volume=density.
Answer:
F = 352 N
Explanation:
we know that:
F*t = ΔP
so:
F*t = M-M
where F is the force excerted by the wall, t is the time, M the mass of the ball, the final velocity of the ball and the initial velocity.
Replacing values, we get:
F(0.05s) = (0.8 kg)(11m/s)-(0.8 kg)(-11m/s)
solving for F:
F = 352 N
Answer:
apply a voltage to a cable a current is created that increases linearly with the voltage
Explanation:
apply a voltage to a cable a current is created that increases linearly with the voltage according to the ohm ratio
V = I R
Where R is the resistance of the wire
If the applied voltage is high, the amount of current is also high, which is why when there are many electrons displacing ce, the shock between them increases significantly, causing an increase in the temperature of the cable that is reflected in an increase in resistance, for which continue to comply with Ohm's law the current should be a little lower
The objects that look black are all tied for first place.