Answer:
The units (km/h) tell you how to do this! 200km/3h = 66.66666666…. BUT technically you only have ONE significant digit: 3 so 66.666… rounded to ONE digit is 70km/h but that is probably not important in this intro class so V = 66.67 or 67 km/h
It is because of the high specific heat of water.
Specific heat is the amount of heat needed to change the temperature of unit mass of a substance by one degree.
Specific heat of water is 4.186 kJ/kg K and that of air is 1 kJ/kg K. Thus, a given amount of heat will cause more change in the temperature of air than that of water.
Kinetic energy (K.E) = 1/2 mass x velocity²
Momentum (P) = mass x velocity
K.E = 1/2 Pv
233 = 1/2 x 20.4 x v
v = 22.8 m/s
20.4 = 22.8m
m = 0.89 kg
Answer: 0 Joules
Explanation:
According to first law of thermodynamics:
=Change in internal energy
q = heat absorbed or released
w = work done or by the system
w = work done by the system=
{Work is done by the system when the final volume is greater than initial volume and is negative and vice versa}
Given : The volume is constant , i.e. 
w = =[tex]-P\times 0=0J/tex]
Thus no work is done by the gas during this process.
Answer:
11.75 ohms
Explanation:
since its series connection
R equivalent = R1 + R2 = 7.25 + 4.5
