Atomic and Nuclear Physics Answers

if the asteroid is moving at a constant speed in its orbit,does this also mean it is moving at a constant velocity explain is the asteroid accelerating explain

A 60kg boy and a 40kg girl decide to play "tug of war" on a frictionless surface. In the process, the girl accelerated toward the boy at 3.0m/sec2. what is the acceleration of the boy toward the girl?

A 75kg astronaut in space against a 200 kg anvil. when the astronaut lets go of the anvil while pushing it what happens?

Why Bomb is called as "Bomb"??

The highest recorded temperature on Krypton was 163[sup]◦[/sup]F.&
The lowest recorded temperature was −134[sup]◦[/sup]F.&
Express the low temperature extreme indegrees Celsius.
Answer in units of& [sup]◦[/sup]C.

Write the nuclear equation for the transmutation of a radioactive radium isotope, 226Ra88, into a radon isotope, 222Rn86, by the emission of an α particle.

What are some ideas of an issue that affect globally, or personally etc that i could do an issue study about?
for example "should the amount of x rays be limited or everyone due to radiation?"
or "Is nuclear fission a good idea?"

etc

In a boiling water type reactor I know the value of discharge.
The inlet and outlet density is given and average velocity is given as well.
Also friction factor is given and we can use darcy-weisbach equation to apply energy equation how do I find pressure

An 11,000-watt radio station transmits at 880 kHz. Calculate the number of photons that are emitted per second.

What is the effective half life of Tc-99m.? & If the biological half life of Tc-99m is 10h and the physical half life is 6 h.