Answer:
Solar power drives Earth's climate. Energy from the sun heats Earth's surface, warms the atmosphere, provides energy for photosynthesis, causes evaporation, drives the weather and water cycles, and powers the ocean currents. ... This circle represents the Earth and the inner-most
Answer:
The volume of the balloon wil increase to the double of the initial volume.
Explanation:
p2= p1/2
p1*v1= p2*v2
p1*v1= p1/2 * v2
p1*v1 / p1/2 = v2
2* v1 = v2
Answer:
356K
Explanation:
use this formula for brayton cycle
∩=1-(Tin/Tout)
where
∩=efficiency
Tin= inlet temperature
Tout=
outlet temperature
solving
Tout=Tin/(1-∩)
Tout=267K/(1-0.25)
Tout=356K
Answer:
Trial and error.
Explanation:
This approach of Thomas Edison where in testing of thousand of different material for light bulb filament are used to find the most suitable material is called trial and error approach of problem solving.
Trial and error pursue a method, seeing if it performs, and not trying a new mechanism. This mechanism will be repeated until a solution or success is attained. Assume moving a large object like a couch into your house for example.
Answer:
14.625 years
Explanation:
Because acceleration/deceleration are negligent we can simplify this problem into 2 basic parts:
First: how long before the astronaut arrives? Since the speed of the craft is 0.8 times the speed of light and the distance to travel is 6.5 light-years, the equation to answer this part is:
0.8t=6.5
solve for t by dividing by 0.8
t=6.5/0.8 or 8.125
so, she will arrive in 8.125 years.
Then, once she sends her message, it will travel towards earth at 1 times the speed of light or:
1.0t=6.5 which is just t=6.5
so, her message will arrive back to Earth (8.125+6.5) 14.625 years after takeoff.