can i get the question so that i can answer your question
Answer:
In most materials, as heat energy is absorbed, the density decreases. IF a certain object is heated, it might appear bigger than usual because it expands as the molecules inside moves faster than usual. However the mass of it stays the same while the density decreases.
Answer:
16.6 kJ/°C
Explanation:
given,
Amount of heat absorbed = 45 kJ
initial temperature, T₁ = 25.5°C
final temperature, T₂ = 28.2°C
change in temperature = T₂ - T₁
= 28.2 - 25.5 = 2.7° C
![Heat\ capacity = \dfrac{Heat\ absorbed}{\Delta T}](https://tex.z-dn.net/?f=Heat%5C%20capacity%20%3D%20%5Cdfrac%7BHeat%5C%20absorbed%7D%7B%5CDelta%20T%7D)
![Heat\ capacity = \dfrac{45\ kJ}{2.7}](https://tex.z-dn.net/?f=Heat%5C%20capacity%20%3D%20%5Cdfrac%7B45%5C%20kJ%7D%7B2.7%7D)
![Heat\ capacity = 16.6\ kJ/^0C](https://tex.z-dn.net/?f=Heat%5C%20capacity%20%3D%2016.6%5C%20kJ%2F%5E0C)
Heat capacity of the object is equal to 16.6 kJ/°C
Answer:
it must be helical motion in which the charge particle will move uniformly along z axis and simultaneously it will move in circular path in xy plane.
Explanation:
Magnetic field is along z axis while velocity is in x-z plane
so we will have
![F = q(\vec v \times \vec B)](https://tex.z-dn.net/?f=F%20%3D%20q%28%5Cvec%20v%20%5Ctimes%20%5Cvec%20B%29)
so here we can say
![F = q(u\hat i + w\hat k) \times (B \hat k)](https://tex.z-dn.net/?f=F%20%3D%20q%28u%5Chat%20i%20%2B%20w%5Chat%20k%29%20%5Ctimes%20%28B%20%5Chat%20k%29)
so we will have
![F = quB(-\hat j)](https://tex.z-dn.net/?f=F%20%3D%20quB%28-%5Chat%20j%29)
so here the net force on the charge is perpendicular to its x directional velocity along - Y direction
So due to this component of motion it will move along a circle while other component of the motion will remain uniform always
So here it is combination of two parts
1) Uniform circular motion
2) Uniform motion
So we can say that it must be helical motion in which the charge particle will move uniformly along z axis and simultaneously it will move in circular path in xy plane.
That depends on where you weigh it.
-- On Earth, it weighs 9.807 newtons (2.205 pounds).
-- On the moon, it weighs 1.623 newtons (5.84 ounces).
-- On Jupiter, it weighs 24.79 newtons (5.57 pounds).
BTW ... 1,000 grams of mass is called ' one kilogram '.