Answer:
-929.5Joules
Explanation:
To get the work done by sam, we will calculate the kinetic energy of sam expressed as;
KE = 1/2mv²
m is the mass = 1100kg
v is the velocity = 1.3m/s
KE = 1/2(1100)(1.3)²
KE = 550(1.69)
KE = 929.5Joules
Since Sam is opposing the direction of movement, work done by him will be a negative work i.e -929.5Joules
The answer & explanation for this question is given in the attachment below.
We need a system to use those air vibrations to push against the surface of the inner ear fluid.
Answer: have "cis C=C double bonds" and "liquid" at room temperature.
Explanation:
The unsaturated fatty acids have one or more C=C double bonds in the cis formation. Thus, this results in the molecules not been as stable as the saturated fats. They have weaker intermolecular bonds thus resulting in lower melting point . The consequently results in it being liquid at room temperature.
Answer:
(a) T =45.9°C
(b) m = 124kg
Explanation:
In this problem there I'd heat flowing through bars of different composition.
The current flowing through the two bars mus be the same.
The full solution can be found in the attachment below.
