The value of the 4 on the left ... between the 8 and the 9 ... is forty million.
The value of the 4 on the right ... between the 0 and the 3 ... is forty .
Answer:
Spiral galaxies, barred spiral galaxies, and lenticular galaxies have a clearly defined disk component Spiral Galaxies consist of a central bulge and protruding arms. Sometimes, they have two arms that connect in a bar that crosses the center, and this is called a barred spiral galaxy.
E=kQ/r^2 where k is Coulomb's constant
E=(9e9)(1.6e-19)/(1e-10)^2=
1.44e11N/C
Answer:
Slower speed = 70 mph
Faster speed = 100 mph
Explanation:
Let the slower speed be x miles per hour
Then, the faster speed = (x+30) miles per hour
Let the time spent driving at the slower speed (that is, at x mph) = t
Then, time spent driving at the faster speed (that is, at (x+30) mph) = 2t
speed = (distance)/(time)
Distance = speed × time
Distance covered during the slower speed = x × t = xt = 70 (given in the question)
xt = 70 (eqn 1)
At the faster speed
Distance covered = (x+30)(2t) = 2t(x+30)
Distance covered during faster speed = 200 miles
2t(x+30) = 200
2xt + 60t = 200
Recall (eqn 1)
xt = 70
2(70) + 60t = 200
60t = 60
t = 1 hour.
xt = 70
Slower speed = x = 70 mph
Faster speed = (x+30) = 100 mph
Answer:
1.6 s
Explanation:
To find the time in which the potential difference of the inductor reaches 24V you use the following formula:
V_o: initial voltage = 60V
R: resistance = 24-Ω
L: inductance = 42H
V_L: final voltage = 24 V
You first use properties of the logarithms to get time t, next, replace the values of the parameter:
hence, after 1.6s the inductor will have a potential difference of 24V