Answer:
(a): It spends on the trip 2.75 hr (2 hours 45 minutes)
(b): The person travels 213.9 km.
Explanation:
Vp= 77.8 km/h
V1= 89.5 km/h
V2= 0 km/h
t2= 0.36hr
t1= ?
Vp= (V1*t1 + V2*t2) / (t1 + t2)
clearing t1:
t1= 2.39 hr
Trip time= t1+t2
Trip time= 2.75 hr (a)
Distance traveled= V1*t1
Distace traveled= 213.9 km (b)
Sigma F.dS = total work done = change in kinetic energy
(220, 320, -120).(18-13,-11+19,-8+3) +(<span>150, 230, 220).(22-18,-17+11,-3+8)= 1/2 *60*(V^2- 3.5^2)
220*5+320*8+ -120*-5 + 150*4 + 230* 6 +220* -5= ..
simplify his
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A heat engine would be less efficient due to many factors
For instance, a heat engine is more efficient when it uses in cold weather because there is a greater temperature difference ( Carnot Efficient )
A heat engine could be less efficient because of friction
Hope it helps I am a beginner
The correct answer is B. Fern.
Answer:
The magnetic field strength is 2.11 T.
Explanation:
It is given that,
Length of the wire, L = 37 cm = 0.37 m
Current, I = 3.2 A
Force, F = 2.5 N
Magnetic force is given by :
Here,
We know that,
Velocity,
Since,
B = 2.11 T
So, the magnetic field strength is 2.11 T. Hence, this is the required solution.