какое количество теплоты нужно передать льду массой 100г , при температуре -0 градусов чтобы расплавить
1 answer:
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Answer:
x = 5.79 m
Explanation:
given,
mass of the car = 39000 Kg
spring constant = 5.7 x 10⁵ N/m
acceleration due to gravity = 9.8 m/s²
height of the track = 25 m
length of spring compressed = ?
using conservation of energy
potential energy is converted into spring energy
x = 5.79 m
the spring is compressed to x = 5.79 m to stop the car.
Answer:
attached below is the free body diagram of the missing illustration
Initial kinetic energy of the electron = 3 eV
Explanation:
The conclusion that can be drawn about the kinetic energy of the electron is
E = initial kinetic energy of the electron
E = -4 eV
E = -1 eV
insert the values into the equation above
= -1 -(-4) eV
= -1 + 4 = 3 eV
