Answer:
275494000 J
Explanation:
m = 2.65 kg
T1 = 100 C
T2 = 145 C
(Lv) Specific heat of steam = 2.26 x 10^6 J/Kg
c = 2010 J/Kg x C
Q1 = mLv = (2.65 kg)(2.26x10^-6)
= 5989000 J
Heat required to raise temperature to T = 145 C is
Q2 = mc(delta T) = (2.65kg)(2.26 x 10^6 J/Kg)(145C - 100C)
= 269505000 J
Total thermal energy required:
Q = Q1 + Q2
= 5989000 J + 269505000 J
= 275494000 J
Answer
given,
mass of the ball = 300 g
= 0.3 Kg
maximum altitude of the ball = 10.1 m
Potential energy of the softball:
PE = m g h
PE = 0.3 x 9.8 x 10.1
PE = 29.69 J
Maximum kinetic energy at which the ball is released from hand to reach height of 10.1 m is 29.69 J.
Kinetic energy at which ball returns to your hand is equal to 29.69 J.
speed of the ball
v² = 197.93
v = 14.069 m/s
Answer:
I think it would be either B or C
Explanation:
sorry i dont know for sure
<h3><u>Answer;</u></h3>
Each will reflect at an angle equal to its angle of incidence.
<h3><u>Explanation;</u></h3>
- <em><u>When light hits a surface or a boundary it bounces of the surface a phenomenon called reflection, which is a property of waves. Reflection occurs such that the incidence angle is equal to the angle of reflection.</u></em>
- Reflection of light depends on whether the surface is smooth or rough. When the light hits a smooth surface it bounces off the surface and all the rays of light moves in the same direction, this type of reflection is called specular reflection.
- On the other hand , when right rays hits a rough surface the rays bounces off the surface and the rays move in different directions, a type of reflection called diffuse reflection.