Answer:
they point north and south directionwhen suspende freely
the poles exist in pairs
they attract magnetic substance
Answer:
12.5 ft/s
Explanation:
Height of person = 6 ft
height of lamp post = 10 ft
According to the question,
dx / dt = 5 ft/s
Let the rate of tip of the shadow moves away is dy/dt.
According to the diagram
10 / y = 6 / (y - x)
10 y - 10 x = 6 y
y = 2.5 x
Differentiate both sides with respect to t.
dy / dt = 2.5 dx / dt
dy / dt = 2.5 (5) = 12.5 ft /s
Answer:
60 m/s (in the opposite direction)
Explanation:
By conservation of momentum,
Initial momentum of board + Initial momentum of man = Final momentum of board + Final momentum of man
=> 0 + 40*12 = 8*(-v) + 0
=> v = -60 [ Negative indicates opposite direction ]
Answer
correct answer is Amber light
amber light signifies under full control
an amber light is an golden shaded traffic light demonstrating that vehicles should stop except if it is perilous to do as such, around proportional to the yellow light in the US. (US, dated) A yellow light.
