Answer: <u><em>D a source of electricity</em></u>
Explanation: I have done that question please tell me if it is correct
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)
Force = mass*acceleration so
3.6*2.5 =9 Newtons
Answer: b)Gases
Explanation: Because the Particle are moving freely
Answer:
Explanation:
First, we will use conservation of the linear momentum:
so:
where is the mass of the dart, is the speed of the dart just before it strickes the apple, the mass of the apple and the velocity of the apple and the dart after the collition.
Then, solving for V_s:
now, using the conservation of energy:
so:
where g is the gravity and h how high does the apple move upward.
Now, replacing and solving for h, we get: