Answer:
The height will be 917431.2 m.
Explanation:
Power of bulb = 75 W
Time kept on 1 hr = 60 x 60 = 3600 sec
Energy of bulb = power x time
E = 75 x 3600 = 270000 J
From conservation of energy, kinetic energy of the bulb is equal to the potential energy of the bulb due to its height of fall.
Potential energy = m x g x h
Where g = acceleration due to gravity 9.81 m/s2
m = mass = 30 g = 0.03 kg
PE = 0.03 x 9.81 x h = 0.2943h
Equating withe the energy of bulb (still obeying energy conservation)
270000 = 0.2943h
h = 270000/0.2943 = 917431.2 m
Answer:
Dopamine is a neurotransmitter chemical which is released by the neurons of the brain for transfer of information from cell to cell. It regulates the movement and emotional responses in the human body. The abnormal levels of dopamine can be responsible for the neurological diseases.
The decrease of dopamine liberation from the substantia nigra of the brain can lead to Parkinson's disease whereas the excess release may lead to over-sensitivity of the dopamine receptors and can be responsible for the disease schizophrenia.
Displacement only contain the length of movement and the direction of that movement
So you can pretty much disregard the speed.
30 to the west than 40 to the east
The displacement will be 10 km to the east
hope this helps
Answer:
Physical changes are changes affecting the form of a chemical substance
Explanation:
The final velocity is +15.0 m/s
Explanation:
The motion of the cart is a uniformly accelerated motion (=at constant acceleration), therefore we can use the following suvat equation:
where
v is the velocity at time t
u is the initial velocity
a is the acceleration
t is the time
For the cart in this problem, we have:
u = +3.0 m/s (initial velocity)
(acceleration)
t = 8.0 s (time)
Substituting, we find the final velocity:
Learn more about accelerated motion:
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