15 Define the volt, the watt and the kilowatt-hou
An electric lamp is marked '100 W, 220 V
What do you understand by this? What current
is taken by the lamp when it is connected to
220 V mains supply? What is the resistance o
the lamp?

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000