Alight bulb connects to a battery. a second, identical light bulb connects in parallel to the first light bulb. the connecting wires have negligible resistance. when the switch is closed, the original light bulb will:
o no longer light.
o become brighter.
o become dimmer.
o experience no change in brightness.

d

Explanation:

Suppose V is the voltage of battery and R is the resistance of bulb

so Power drop for initial stage

When another identical bulb of same resistance is applied in parallel so voltage Drop across both the resistor will be same i.e. V

so Power consumed  

so there is no change in power and hence no dip in brightness  

the device is called “ rocket engine”

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .