It was 40 I hope it helps
Answer:
16.2 days
Explanation:
Find the number of halflives:
1/2 * 1/2 = 1/4 so <u>two</u> halflives have passed
2 * 8.1 days = 16.2 days
Answer:
2.877 m/s
Explanation:
According to the laws of conservation of linear momentum,
the momentum of the moving objects before impact is equal to the momentum of the objects after impact (Assuming no external forces were applied)
Let both players are tackled and moving in V velocity
- M and m - masses of the players
- U and u - velocities of them respectively (both velocities are towards east direction )
momentum before impact = momentum after impact
→MU + →mu = →(M+ m )v
91.5 * 2.73 + 63.5 * 3.09 = (91.5 + 63.5) * V
→V = 2.877 m/s (To East)
Increase in temperature of water = 0.53 °C
Explanation:
Change in mechanical energy = Potential energy
Potential energy = mgh
Mass, m = Mass of 1 L water = 1 kg
Acceleration due to gravity, g = 9.81 m/s²
Height, h = 225 m
Potential energy = 1 x 9.81 x 225 = 2207.25 J
Because of this 2207.25 J water gets heated.
Heat energy, E = mcΔT
Mass, m = Mass of 1 L water = 1 kg
Specific heat of water, c = 4200 J/kg/C
Energy, E = 2207.25 J
Change in temperature, ΔT = ?
Substituting
2207.25 = 1 x 4200 x ΔT
ΔT = 0.53 °C
Increase in temperature of water = 0.53 °C
Answer:
Soils develop faster in warm, moist climates and slowest in cold or arid ones. Rainfall is one of the most important climate factors in soil formation.
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