The netro level 8 and 4 is the hydrogen atom 2. Hope u enjoy your grade
Answer:
Explanation:
The normal component of force applied = 5.23 sin 51 N
Let R be the reaction force from the ground . Weight of the toy
W = mg
.518 x 9.8
= 5.07 N
As there is no movement in vertical direction , these forces will um up to zero
W - R - 5.23 SIN 51 = 0
R = W - 5.23 SIN 51
5.07 - 4.06 N .
1.01 N .
Answer:
2.06 x 10⁴ J
Explanation:
The process takes place in three steps. First, the ice is heated from -20 °C to 0 °C. Then the ice undergoes a phase change to water. Finally, the water is heated from 0 °C to 50 °C.
The heat energy required for the first step is as follows:
Q = mcΔT = (36.0 g)(2.00 Jg⁻¹°C⁻¹)(0 °C - (-20 °C)) = 1440 J
The heat energy required for the phase change (where L is the heat of fusion) is then calculated. Grams are converted to moles using the molar weight of water (18.02 g/mol)
Q = ML = (36.0 g)(mol/18.02g)(6000 J/mol) = 11987 J
Finally, the heat energy required to raise the temperature of the water to 50°C is calculated:
Q = mcΔT = (36.0 g)(4.00 Jg⁻¹°C⁻¹)(50 °C - 0 °C) = 7200 J
Adding all of the heat energy values together gives:
(1440 + 11987 + 7200) J = 20627 J
The final answer is 2.06 x 10⁴ J