Engineers must understand the thermal properties of materials to be able
to predict the performance of any given material over its lifetime in a
specific application. Engineers apply their understanding of the
thermal properties of materials to the design of efficient heat transfer
materials for better engines, spacecraft and electronic devices. They
also examine the thermal properties of insulation to design more
efficient buildings and homes. Engineers develop ways to minimize heat
transfer from a motor to the surrounding environment. Often they find
ways to insulate the motor to decrease the convective heat transfer from
the motor. They design a refrigerator to keep heat out of the inside,
as well as keep the refrigerator contents cool. hope this helped
Answer:
8.33×10⁻⁴ m/s²
Explanation:
There are 100 cm in 1 m, and 60 s in 1 min.
300 cm/min² × (1 m / 100 cm) × (1 min / 60 s)² = 8.33×10⁻⁴ m/s²
The answer is true a convex lens can produce a real image but not a viral image
Answer:
Explanation:
the relation between current, voltage and resistance in an electrical circuit is given by Ohm's law:
where V is the voltage, I is the current and R is the resistance. In this problem, the current is I=2 A, the voltage is V=120 V, therefore we can arrange the previous equation and find the resistance:
Here if we assume that there is no air friction on both balls then we can say
now the acceleration is given as
so here both the balls will have same acceleration irrespective of size and mass
so we can say that to find out the time of fall of ball we can use
now from above equation we can say that time taken to hit the ground will be same for both balls and it is irrespective of its mass and size