Answer:
The correct option is;
a. Any process in which the entropy of the universe increases will be product-favored
Explanation:
According to the second law of thermodynamics, the change in entropy of a closed system with time is always positive. That is the entropy of the entire universe, considered as an isolated system, always increases with time, hence the entropy change in the universe will always be positive.
Therefore, any process in which the entropy of the universe increases will be product favored.
Answer: a) 60m/s b) 360m c) 180m
Explanation:
Projectile motion occurs when an object launched into space falls freely under the influence of gravity.
If the time of flight (T) = 2Usin(theta)/g where;
U is the velocity of the object
theta is the angle at which the object was thrown
g is the acceleration due to gravity
Given T = 6 seconds
theta= 90°(object launched upwards)
g = 10m/s²
U= ?
Substituting in the formula we have;
6 = Usin90°/10
60 = Usin90°
since sin90° = 1
U = 60m/s
The balls initial velocity is 60m/s.
b) Maximum Height reached (H) = U²sin²theta/g
Given U = 60m/s, theta = 90° g = 10m/s²
H = 60²(sin90°)²/10
H = 3600/10
H = 360m.
The maximum height reached is 360m
c) at maximum height, v = 0
Using v² = u² - 2gh
0 = 60² - 2(10)h
-3600 = -20h
h = 3600/20
h = 180m
The cliff is 180m tall
Answer:
<em>a. Aristarchus</em> was the Greek scientist who concluded that the sun is the centre of the solar system, and that the Earth revolves around the Sun
Explanation:
<em>Aristarchus</em> was a Greek scientist who studied astronomy. He concluded that the sun is the centre of the solar system, and that the Earth revolves around the Sun (that it was Heliocentric).
Explanation:
Waves are disturbances that transmits energy from one point to another either using the particles of the medium or not.
There are different forms of waves.
The electromagnetic waves is produced by the sun and it transmits energy to all the universe
Ocean waves are clearly physical and we can see how they propagate in nature.
Causes of waves:
- The ultimate cause of a wave is a source of disturbance and energy.
- In the ocean, wave are caused by winds when they cause friction over surface waters.
- Electromagnetic waves are energetic waves that transmits their own energy outward.
- Temperature differences between places can cause waves too.
- Vibration can lead to generation of waves.
- Pressure differences
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Answer:
The energy source which can cause the turbine (wooden wheel) to spin and generate electrical energy is hydro-energy source.
Explanation:
The energy source which can cause the turbine (wooden wheel) to spin and generate electrical energy is hydro-energy source. Hydro energy source, is the energy source gotten from the force of falling water.
Hydro energy causes the turbine to spin converting it mechanical energy and finally to electrical energy using a generator.
Force of falling water (hydro-energy source) ------>spinning of turbine (mechanical energy) ---------------> electrical energy