Answer:
all forms of electromagnetic radiation travel at a single speed in a vacuum.
Explanation:
Answer:
Honestly I cant understand that so please explain it someone
Explanation:
Free fall without air resistance:
g=9.81 m/s²
t=235 s
h=?
h=0.5*g*t²
h=0.5*9.81*235²
h=270879m =270 km
Answer:(1) Pre-solar nebula
(2). Planet formation
Explanation:
Nebular hypothesis says that the Solar System formed from the gravitational collapse of a fragment of a giant molecular cloud.
One of the collapsing fragments called the pre-solar nebula formed what became the Solar System.
The planet can also be formed by accretion. Accretion is a process in which planets began as dust grains in orbit around the central protostar.
When the terrestrial planets were forming, they remained immersed in a disk of gas and dust.
