When a star collapses to form a black hole,
its mass increases, that is letter C. One example of this is the Big Bang
Theory.
<span>
It is by no doubt that our universe had had its own
starting point but how it really started became a debate for the scientists
over the past centuries. From theories such as Ekpyrotic theory, White Holes,
Matrix theory, and Quantum theory, the Big Bang theory is the theory mostly
accepted by scientists. According to the theory, the universe started as a
singularity, that is, from a black hole under extreme gravitational pressure
and expanded (instead of exploded) and cooled. Its cooling, according to the
theory, is still happening now as of the moment.</span>
Answer:A
Explanation:
Given
Two ponies are at Extreme end of turntable with mass m
suppose turntable is moving with angular velocity 
Moment of inertia of Turntable and two ponies
let say at any time t they are at a distance of r from center such 
Moment of inertia at that instant
conserving angular momentum as net Torque is zero
Thus we can say that angular velocity increases as they move towards each other.
Answer:
1.15×10⁶ J
Explanation:
Heat needed to bring the ice to 0°C:
q = mCΔT
q = (3 kg) (2100 J/kg/K) (0°C − (-2°C))
q = 12,600 J
Heat needed to melt the ice:
q = mL
q = (3 kg) (3.36×10⁵ J/kg)
q = 1,008,000 J
Heat needed to bring the water to 10°C:
q = mCΔT
q = (3 kg) (4200 J/kg/K) (10°C − 0°C)
q = 126,000 J
The total heat is:
q = 12,600 J + 1,008,000 J + 126,000 J
q = 1,146,600 J
q = 1.15×10⁶ J
Answer:
100%
Explanation:
The accuracy level can be measured by the percent of error which is defined as the average accepted 100%.
Accuracy is related to the proximity of the measurement. It is called the true value of the accuracy where as the precision is referred to the ability at the same time to be reproduced in measurement .
The instrument should be proper and produce the reliable and accurate measurement tools.
Thus here the statistical quantity that is used by the to indicate the accuracy level is purely 100%.
