Answer:
while(x>=0)
{
<em>loop execution that manipulates x</em>
}
Explanation:
A while loop keep iterating as long as the condition inside is true. The necessary element to remember is to make your the condition variable is altered from within the loop. Otherwise, the loop will become an infinite loop.
The condition state that as long as the variable x is greater than or equal to 0, the loop will continue. If x becomes negative, the loop will terminate.
Your experiment should keep one thing constant and measure the other. So vary the temp and measure the pressure. You will get a set of data that relates pressure with temp.
<span>PV = nRT
So
P and T are directly proportional.
</span>These experiments are one of either Boyle-Mariottte's, Gay-Lussac'a or Charles' law.
Answer:
354200J
Explanation:
Given parameters:
Mass of copper bushing = 8kg
Initial temperature = 25°C
Final temperature = 140°C
Unknown:
Quantity of heat required to heat this mass = ?
Solution:
The amount of heat required to heat mass from one temperature to another is given by;
H = m c Δt
where m is the mass
c is the specific heat
Δt is the change in temperature
C is a constant and for copper, its value is 385J/kg°C
Input the parameters;
H = 8 x 385 x (140 - 25) = 354200J
Answer:
D. A mass extinction may happen when a comet or asteroid impact starts a chain of events that blocks sunlight for weeks or even years.
Explanation:
Mass extinction: An event in the history of the Earth when a large portion of the living species become extinct. Mass extinction has happened a lot of times and every time life finds a way to come back, evolve and adapt to the new conditions.
The proofs of closest extinction can be found in the extinction of dinosaurs. Widely accepted reason behind this extinction is thought to be strike of a comet or an asteroid around 65 million years back. Because of this impact a chain of event started. A lot of dust and gases was filled in the atmosphere which blocked the sunlight to reach Earth for around 2-3 years.
Answer: radio and television
Satellite orbits with an East-West orientation are best used
for communication purposes. The satellite orbit should always be suited for its
purpose. Radio and television are powered by numerous satellites rotating the
Earth from east to west.