Answer:
Substances that cannot be broken down into other substances are called elements.
Explanation:
Elements are pure substances that cannot be broken down into other elements through any non-nuclear means. For example: hydrogen, helium, lithium, beryllium, boron, and carbon.
A list of the elements can be found in a periodic table.
Answer:
Explanation:
Geosynchronous orbit (GSO): Orbits with an altitude of approximately 35,786 km (22,236 mi). Such a satellite would trace an analemma (figure 8) in the sky. Geostationary orbit (GEO): A geosynchronous orbit with an inclination of zero.
Answer:
50 Mph.
Explanation:
According to the National Severe Storms Laboratory, winds can really begin to cause damage when they reach <em><u>50 mph</u></em>. But here’s what happens before and after they reach that threshold, according to the Beaufort Wind Scale (showing estimated wind speeds): - at 19 to 24 mph, smaller trees begin to sway.
Matter is generally any physical substance, and it's all around us... a form of matter would be liquid, and water is a liquid.
Answer:
Part a)

Part b)

Part c)

Part d)

Part e)

Part f)

Explanation:
As we know that initial velocity of the ball is given as


Now final velocity of the system is given as

Part a)
now magnitude of initial momentum is given as



Part b)
Change in momentum is given as



Part c)
As we know that average force is defined as the rate of change in momentum
so here we have



Part d)
Magnitude of change in momentum is given as



Part e)
As we know that in 2nd case the force is same as the initial force
so we will have



Part f)
Since this is elastic collision so change in kinetic energy must be ZERO
