Question 8
Silicon is a semi-conductor that are mostly used in electronic devices. From the choices give, silicon is applicable in t<span>ransistor, integrated circuit and diode. But the best answer that suits this question is (B) integrated circuit.
Question 9
Power is the rate of doing work. It is calculated as,
Power = workdone/time taken to do that work.
In electricity, power = current </span>×voltage
From ohm's law, V=IR
Where I⇒current and
R⇒ resistance.
∴Power = I²R
= 6²×5
= 180 Watts
B- only kinetic energy because it’s moving and not static
physically, it is still the same substance, just in a different form. Water turning into ice is a great example of a reversible physical change.
The initial speed of the skier is 14 m/s.
The maximum height attained by the skier is 15 m.
<h3>
Initial speed of the skier</h3>
The initial speed of the skier is determined by using the following kinematic equation.
<h3>Maximum height attained</h3>
The maximum height attained by the skier is calculated as follows;
Thus, the maximum height attained by the skier is (10 + 5) = 15 m.
Learn more about maximum height of projectile here: brainly.com/question/12870645
Answer: B. Only the mass of the planet
Explanation:
the confusion on the concepts of mass and weight arises from the fact that the acceleration due to gravity is more or less constant in any place on the Earth's surface, thus the weight of an object is directly proportional to its mass. hope it helps <3
