Answer:
There are many topics related to physics such as :
Kinematics
Dynamics
Light
Sound
Complete question :
A 12 m x 15 m house is built on a 12-cm-thick concrete slab.
What is the heat-loss rate through the slab if the ground temperature is 5°C while the interior of the house is 25°C
Answer:
3kW
Explanation:
Given the following :
Dimension of house :
Length = 12m
Width = 15m
Thickness of concrete slab (t) = 12cm
t in metres :
100cm = 1m
12cm = (12/100)m
= 0.12m
Ground temperature (Tg) = 5°C
Interior temperature = (Th) = 25°C
Thermal conductivity of concrete (K) is approximately 1 Wm/k
Using the relation:
Q = KA * [ (Th - Tg) / d]
A = Length * width = (12 *15) = 180
Q = (1 * 180) * [(25°C - 5°C) / 0.12]
Q = 180 * (20/0.12)
Q = 180 * 16.6666
Q = 3,000W = 3kW
Answer:
a) the answer is t=4 seconds
b) acceleration is zero
c) displacement= 142 m
Explanation:
Given the position of the particle
a) the time required when velocity 
now we solve for time 
b) acceleration when 
acceleration is the time derivative of velocity i.e
c) the net displacement of the particle during the interval t = 1 s to t = 4 s is
Answer:
I don't really understand the question but fire water air and like earth but you said 3
Explanation:
