Explanation:
Science changes in so many ways. In my opinion, science changes due to Climatic change.
Hope it helps.
As 1 km = 1000 m = 1000,00 cm,
So, 1 cm = (1/1000,00) km
1 hour = 60 × 60 s = 3600 s
So, 1 s = (1 / 3600) hour
The light travels at a speed of 
.
In kilometer/hour,
The role of thermal energy is to balance the electrical energy lost from the light bulb.
<h3>
Energy conservation</h3>
The law of energy conservation states that energy can neither be created nor destroyed but can be transformed from one form to another.
<h3>Thermal energy</h3>
This is a form of energy that occurs due to rise in temperature.
The role of thermal energy is to balance the electrical energy lost from the light bulb.
Learn more about conservation of energy here: brainly.com/question/166559
Answer:
-0.4454 Joules
Explanation:
m = Mass of block = 2 kg
h = Height of extension = 17 cm = x
g = Acceleration due to gravity = 9.81 m/s²
Potential energy of the spring
The kinetic energy of the spring
In this system as the potential and kinetic energy is conserved from work energy equivalence we get
The work done by friction is -0.4454 Joules
Answer:
F = 150 N
Explanation:
Torque being applied by parent
= F x r
where F is force applied tangentially and r is point of application of force from axis of rotation ( center )
given torque = 240 Nm
r = 1.6 m
F x r = 240
F x 1.6 = 240
F = 150 N
So a force of 150 N is applied by the parent to achieve the given torque.
This force will also be applied by the merry - go- around on the parent as reaction force according to Newton's third law. The parent will not be pushed back by this force because he is standing on a rough surface . Friction of surface will help him remain stationary on the ground.
