They both have produce oxides, use up oxygen, and release energy as well.<span />
if a theory can be verified by an experiment ten it's a good theory. if an expt contradicts a theory, theory is wrong.
at CERN in europe, a new fundamental particle was said to be found.
Professor Peter Higgs had a theory predicting it.
called the "higgs boson" he got a nobel prze for the boson.
a partcle of light = a photom = a boson ...
Answer: True.
Explanation:
Since the gases are given momentum as they are ejected by the rocket engine, a rocket moves in space. Consider the rocket in space as it rests. The device does not have any momentum. Next, it ignites the engine. As the exhaust gases go in one direction, to keep the overall momentum of the device steady, the rocket goes in the other. This shift in momentum of the gases gives the rocket the "push" to move forward. This push is what we call the thrust of the rocket.
Answer:
80 cm
Explanation:
Suppose the large mass is at point A which is at length 'x' meter from right, Since it is on meter stick so the length on left will be (1-x) meter .
Since the system is in equilibrium position
clock wise torque around point A= anti clock wise torque around point A
force on left side × distance from point A on left side = force on right side × distance from point A on right side
Since left side is 4 times more reading - it means four times force of tension is acting there as compared to right side !
Let force be F
then,
4F × (1-x)=F × x
==> 4(1-x)=x
==> 4-4x=x
==> 4 =5x
==> x= 4/5=0.8 meter = 0.8 × 100 cm = 80 cm
Answer:
Students should realize that each atom in a group has the same number of electrons in its outermost energy level. For instance, hydrogen, lithium, sodium, and potassium all have 1 electron on their outer energy level. Let students know that these electrons in the outermost energy level are called valence electrons.
