Option (c) is correct.
Explanation:
initial velocity along vertical=0
velocity along horizontal Vx
acceleration along the vertical=9.8 m/s²
displacement along vertical,h=40 m
distance along horizontal= 10 m
using the kinematic equation
h= vi*t + 1/2 g t²
40=0(t) + 1/2 (9.8)t²
t²=8.163
t=2.857 s
now the displacement along vertical= x= Vx* t
10=Vx (2.857)
Vx=3.5 m/s
Answer:
Momentum of elephant is greater than momentum of tranquilizer dart
Explanation:
= Mass of elephant = 2140 kg
= Mass of tranquilizer dart = 0.0415 kg
= Velocity of elephant = 7.63 m/s
= Velocity of tranquilizer dart = 619 m/s
Momentum of elephant
Momentum of tranquilizer dart
So, 
Momentum of elephant is greater than momentum of tranquilizer dart
Answer:
B
Explanation:
D is nonsense. The current keeps coming through all lights.
A is wrong. The exact opposite happens. More bulbs more resistance.
C is wrong. More resistance less current, not more.
So your answer is B because the voltage drop in each decreases when there are more bulbs.
Answer:
Some examples of the uses of a screw are in a jar lid, a drill, a bolt, a light bulb, faucets, bottle caps and ball point pens.
Explanation:
