The ionosphere is the part of the sun-layers which allows us to see the northern lights or auroras. The ionosphere is the most concentrated with ions and charged electrons and reflects radio waves.
It burns when you start your car and that conducts electricity which burns it.
Mass/density= volume so it will be 360/0.9 which equals to 400 and if you want to find mass you just need to multiple volume•density
If the gravity decreases on the earth, we will be weightless and pressure will be less exerting on us and we will be able fly
Answer:
0.4 N
Explanation:
Draw a free body diagram of the block. There are three forces: weight force mg pulling down, buoyancy force ρVg pushing up, and tension force T pulling up.
Sum of forces in the y direction:
∑F = ma
T + ρVg − mg = 0
T = mg − ρVg
T = g (m − ρV)
Plugging in values:
T = (9.8 m/s) ((2.5 g/cm³ × 20 cm³) − (1 g/cm³) (10 cm³)) (1 kg / 1000 g)
T = 0.392 N
Rounded to one significant figure, the reading of the spring scale is 0.4 N.
