The circuit shown has a battery and two resistors, with R1>R2. Which of the two resistors dissipates the larger amount of power? Explain
Rank in order, from largest to smallest, the three currents I1 TO I3. And explain why?
The two batteries are identical and the four resistors all ahve exactly the same resistance.
a) Compare change in V(ab), V(cd), and V(ef). Are they all the same? In not, rank them in decreasing order. Explain you reasoning
b) Rank in order, from largest to smallest, the five currents I1 to I5, and ezplain why
Answer:
90 km/hr= 90000/3600=25 m/s initial velocity
-25/ 2 (-4.9)= 2.551 secs
h(2.551)= -4.9 (2.551)² + 25(2.551)=-31.8872449+63.775 = 31.8m
The distance would be 31.8 meters, also that person will have sore arm.
Answer:
The acceleration of the rifle equals the force that the bullet exerts on the rifle divided by the mass of the rifle. The two forces are equal, but since the mass of the rifle is much greater than the mass of the bullet, the acceleration of the rifle is much less than the bullet's acceleration.
Answer:
KE= 30 J
Explanation:
Given that
m= 2.5 kg
r= 0.12 m
θ = 15°
h= 1.2 m
As we know that solid sphere rolls without slipping.It means that
v= ω r
v=Linear velocity
ω=Angular speed
r=radius
The total kinetic energy KE
Moment of inertia of solid sphere I
Now from energy conservation
Energy at top = Energy at bottom
The potential energy at top = m g h
Potential energy at bottom = 0
Kinetic energy at top = 0
Kinetic energy at bottom = KE
m g h + 0 = 0 + KE
KE= 2.5 x 10 x 1.2 ( take g =10 m/s²)
KE= 30 J
