Answer:
I think the answer might be C
Answer:
the small intestine digest food
Answer:
v = 2.31 m/s
Explanation:
Kinetic energy will be converted partially into potential energy and rest will remain in the form of kinetic energy .
Initial kinetic energy = 1/2 mu²
u is initial velocity at the bottom .
Potential energy at the top
= mgh
Kinetic energy at the top
= 1/2 m v²
According to conservation of energy
1/2 mu² = mgh + 1/2 m v²
1/2 u² = gh + 1/2 v²
.5 x 4.5² = 9.8 x .76 + .5 v²
10.125 = 7.448 + .5 x v²
v = 2.31 m/s
For us to understand the missing item that would complete beta decay reaction, we need to achieve in depth understanding of chemical formulas and nuclear symbols. Next is to have great comprehension of the following points:
<span>1.) Neutron in nucleus breaks down and changes into a proton.
2) Then it emits an electron, as well as an anti-neutrino which go into space.
3) Lastly, atomic number continuously goes UP while mass number remains unchanged.</span>
Answer:
Explanation:
A mass of 700 kg will exert a force of
700 x 9.8
= 6860 N.
Amount of compression x = 4 cm
= 4 x 10⁻² m
Force constant K = force of compression / compression
= 6860 / 4 x 10⁻²
= 1715 x 10² Nm⁻¹.
Let us take compression of r at any moment
Restoring force by spring
= k r
Force required to compress = kr
Let it is compressed by small length dr during which force will remain constant.
Work done
dW = Force x displacement
= -kr -dr
= kr dr
Work done to compress by length d
for it r ranges from 0 to -d
Integrating on both sides
W =
= [ kr²/2]₀^-4
= 1/2 kX16X10⁻⁴
= .5 x 1715 x 10² x 16 x 10⁻⁴
= 137.20 J