Physics, 29.11.2019 00:31 miller5452
Ahistorian claims that a cannonball fired at a castle wall would melt on impact with the wall. let's examine this claim. assume that the kinetic energy of the cannonball is completely transformed into the internal energy of the cannonball on impact with no energy transferred to the wall. the cannonball is made of iron, which has a specific heat capacity of 450 j/kg-k and a melting point of 1811 k.
1) if the cannonball has an initial temperature of 298 k, how fast would the cannonball need to travel in order to reach its melting point on impact?
/s
Answers: 2
ΔT = m ce (
-T₀)
Another question on Physics
Physics, 21.06.2019 15:30
What is the maximum acceleration of the wing tips, in units of g?
Answers: 2
Physics, 21.06.2019 17:20
Research the neutrino using the internet and report your findings. in a nuclear decay, the nucleus of an atom splits apart. larger particles can be detected and their masses and velocities can be recorded. explain how the existence and properties of the neutrino could be predicted using the conservation laws.
Answers: 3
Physics, 22.06.2019 10:00
Which atomic model was proposed as a result of j. j. thomson’s work?
Answers: 1
Physics, 22.06.2019 11:40
Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?
Answers: 3
You know the right answer?
Ahistorian claims that a cannonball fired at a castle wall would melt on impact with the wall. let's...
Questions
English, 04.11.2020 07:00
English, 04.11.2020 07:00
Biology, 04.11.2020 07:00
Mathematics, 04.11.2020 07:10
Mathematics, 04.11.2020 07:10
Computers and Technology, 04.11.2020 07:10
Mathematics, 04.11.2020 07:10
Mathematics, 04.11.2020 07:10
