When the car moves and makes a sound that is louder that when the car is just sitting there
Answer:
Heat energy required = 687.96 kJ
Explanation:
Heat energy required, H = mCΔT.
Mass of cooking oil, m = 2.34 kg = 2340 g
Specific heat of cooking oil, C = 1.75 J/(g⋅°C)
Initial temperature = 23 °C
Final temperature = 191 °C
Change in temperature, ΔT = 191 - 23 = 168 °C
Substituting values
H = mCΔT
H = 2340 x 1.75 x 168 = 687960 J = 687.96 kJ
Heat energy required = 687.96 kJ
Because not all of the universe can be seen with a visible spectrum
Answer: 28 m.
Explanation:
Using formula G.P.E = m*g*h where, m = mass, g = acceleration due to gravity and h = height.
Answer:
The mean is 79.
The median is 80 - 100
The mode is 80 - 100
Explanation:
The given table is presented as follows;
The mean of a class of values, 
= ∑(Frequency × Midpoint)/∑(Frequency)
Therefore, we get;
= (20+60+150+840+1620+550+260)/(2+2+3+12+18+5+2) = 79.
The mean, =79.
The median class = The middle value lass = The class at the 22 nd value = 80 - 100
The median = 80 - 100
The modal class = The class with the highest frequency = 80 - 100
The mode = 80 - 100
