No place in the river is characterized like this
Answer:
answer 2 because the baseball has less mass then the 1st one
Answer:
2.9 m/s
Explanation:
Momentum will be conserved
Speed of the ball just before collision is
v = √2gh = √(2(9.8)(0.8)) = 3.96 m/s
The initial momentum is 1.3(3.96) = 5.15 kg•m/s
The block takes away momentum of 0.6(2.2) = 1.32 kg•m/s
Leaving the ball with momentum of 5.15 - 1.32 = 3.83 kg•m/s
vf(ball) = 3.83 / 1.3 = 2.946... ≈ 2.9 m/s
Answer:
<em>Electrical power</em>
Explanation:
<em>Electrical power:</em> Electric power (P) is defined as the energy (W) used or produced or transformed per seconds.
Power = Energy produced/transformed/time taken.
P = W/t................................ Equation 1
Where t = time taken
But,
W = VIt................................ Equation 2
Substituting equation 2 into equation 1
P = VIt/t
P = VI............................ Equation 3
or
P = V²/R or P = I²R.
The unit of power is J/s or Volt-ampere is called watt (W).
Large amount of electric power are required in the industry
1 kW = 1000 W
1 MW = 1000000 W
1 h.p = 3/4 kW.
Answer:
ix chemical elements that comprise Group 2 of the periodic table
Explanation:
Calcium, Magnesium, Barium, Beryllium, Strontium, and Radium are alkaline earth metals.
