you have two angles of equal height the first one takes 6 hours to burn out but the second one takes 9 hours to burn out one night before going to sleep you'll eat both candles upon waking up you noticed that one of the candles is now half of the height of the Other how many minutes were you sleeping?
Answers
Step-by-step explanation:
Let h be the height of the candle
speed of First Candle =
4
h
speed of Second Candle =
3
h
how many hours after being lit was the first candle twice the height of the second?
let r be the height of the second candle at that time (t).
r=h−(
3
h
)t
at the same time(t), the height of the first candle must be 2r
2r=h−(
4
h
)t
2(h−(
3
h
)t)=h−(
4
h
)t
2h−(
3
2
)ht=h−(
4
1
)h
2−(
3
2
)t=1−(
4
1
)t
t(
3
2
−
4
1
)=1
t=
5
12
hr or 2.4hr.
Answer:
hi!
Step-by-step explanation:
circular loop placed in a plane perpendicular to the plane of paper carries a current when the keys is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anticlockwise and clockwise respectively. The magnetic field lines point from B to A.
