Answer:
54,450,000,000 Joules
Explanation:
Kinetic Energy =
x x = 54,450,000,000 Joules
When the silk is rubbed against the amber, the silk loses electrons to the amber making the silk positve charge and the amber have a negiitve charge.
when u put both positive charged pieces of silk near each other they will repel each other becasue they have the same charge
law of repulsion states that like charges repel
i have a test on this stuff tmrw good luck! xx
Answer:
25 times greater
Explanation:
Let the mass of the car is m
Initial speed, u = 20 km/h = 5.56 m/s
Final speed, v = 100 km/h = 27.78 m/s
The formula for the kinetic energy is given by
So, initial kinetic energy
Ki = 15.466 m
final kinetic energy
Kf = 385.86 m
Increase in kinetic energy is given by
=
= 385.86 / 15.466 = 25
So, the kinetic energy is 25 times greater.
Answer:
<em>The specific heat capacity of something is simply the amount of heat energy required to raise 1g of that substance or object by 1°C.</em>
<em>The specific heat capacity of something is simply the amount of heat energy required to raise 1g of that substance or object by 1°C.It is given by the formula Q = mcΔT, where Q is the energy transferred (J), m is the mass of the substance (kg), c is the specific heat capacity, and ΔT is the temperature change (°C).</em>