Answer:
0.0136
Explanation:
For the series connection
Effective resistance= 6 + 12= 18 ohm
Current= 6/18=0.33 A
Heat= I^2R= 0.33^2 × 18= 1.96 J
For parrallel
Effective resistance= 6^- 1+12^-1 = 0.167 + 0.083= 0.25 ohm
Current= 6/0.25= 24 A
Heat= 24^2 × 0.25=144J
Ratio of series to parallel= 1.96/144=0.0136
Answer
given,
mass of the astronaut = 66 kg
height of the lift = 15 m
acceleration = g/11 = 0.89 m/s²
a) the work done by helicopter
W = F× h
= m (a+g)h
= 66 × (9.8+0.89)15
W =10583.1 J
b) work done by the gravity
W= mgh
W = - 66 × 9.8 × 15
W = -9702 J
c) Δ KE = net work done
Δ KE = 10583.1 - 9702
Δ KE = 881.1 J
d) speed
v =5.17 m/s
A ray at which angle would produce the most glare is at 70 degrees. The
answer is letter D. the greater the incident of light is, the greater is its
index of refraction and thus having greater angle to produce a light ray.
Answer:
Gravity
Explanation:
Mass and motion are not forces and newton is unit of force. Gravity is defined as force of attraction or repulsion between two bodies and hence is the answer.
Answer:
False
Explanation:
<h3><em>Hope it help mark as Brainlist</em></h3>