Does current flow through the CD wire???
1 answer:
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- Force=700N
- Acceleration=9.8m/s^2
Using newtons law
The final speed of the cart and the bag is 2.2 m/s
Explanation:
We can solve this problem by using the law of conservation of momentum: in fact, in absence of external forces, the total momentum of the bag and the cart must be conserved before and after the collision.
Mathematically:
where:
is the mass of the bag of rice
is the initial velocity of the bag
is the mass of the cart
is the initial velocity of the cart (at rest)
is the final combined velocity of the bag and the cart
Re-arranging the equation and solving for v, we find:
Learn more about momentum here:
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Answer:
Wien peak ( λmax ) is 107.40 nm
radius of super giant is 1.086 × m
Explanation:
given data
temperature 27 kK
power = 100000 times of Sun
Sun radius = 6.96 × 10^8 m
to find out
Wien peak ( λmax ) and radius of supergiant (r)
solution
we will apply here first wien law to find Wien peak that is
λmax = b / t
λmax = 2.9 × / 27000 = 1.0740 ×
so Wien peak ( λmax ) is 107.40 nm
and
now we apply steafay law that is
P = σ × A × .........................1
and we know total power output 100000 time of Sun
so we say
4πr²s = 100000 × 4πR²s
r² = 100000 × R² /
put here value
r² = 100000 × (6.96× )² ×
/
r² = 1.18132 ×
r = 1.086 × m
so radius of super giant is 1.086 × m