Answer:
im not too sure about that all i know is history
We don't even need to know how many pulses were produced
in those 3 seconds.
The beginning of the first pulse took 3 seconds to travel
45 centimeters from the generator.
Its speed is (45 cm) / (3 sec) = 15 cm/sec.
Answer:
Explanation:
Kinetic energy of block will be converted into heat energy by friction .
Heat energy produced = 1/2 m v²
= .5 x 4.8 x 1.2²
= 3.456 J
85% of energy is converted into heat energy , so heat energy produced
= .85 x 3.456 = 2.9376 J .
If Q heat is given to m mass of object having s as specific heat and Δt is increase in temperature
Q = msΔt
specific heat of iron s = 462 J / kg C
Putting the values ,
2.9376 = 4.8 x 462 x Δt
Δt = 13.24 x 10⁻⁴ ⁰C.
Answer is: protons and neutrons in atomic nucleus.
Proton<span> is a </span>subatomic particle (p⁺ or p) <span>with a positive </span><span>electric charge.
</span>Neutron (n⁰ or n)<span> is a </span>subatomic particle <span>with no net </span>electric charge.
Protons and neutrons are nucleons.
The nuclear force is attractive force<span> between nucleons.</span>
