Study of interaction between matter and energy using mechianical description
Answer:
The shape of a bird's beak is a clue to its main source of food. The shape of a bird's beak is designed for eating particular types of food such as: seeds, fruit, insects, nectar, fish, or small mammals. Bird beaks have adapted over time to help birds find food within their habitat which allows them to survive. The beak, bill, and/or rostrum is an external anatomical structure found mostly in birds, but also in non-avian dinosaurs and some mammals. A beak is used for eating and for preening, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young.
By Newton's Law of Universal Gravitation.
F = GMm/r²
Where F is Force of Gravitation, M = Mass of first object, m = mass of second object, r = distance of separation
From the formula, you can see that if the masses, M and m, increased, the value of F would definitely increase as well.
And if r increased the value of F would be reduced because you would be dividing by a bigger number, but when the value of r is decreased the value of F would be increased, because you would then be dividing by something smaller. Note the r is at the denominator of the formula.
So F would increase if there was increase in Masses and decrease in distance.
So the answer is C. a and b.
Complete Question
Use Stefan's law to find the intensity of the cosmic background radiation emitted by the fireball of the Big Bang at a temperature of 2.81 K. Remember that Stefan's Law gives the Power (Watts) and Intensity is Power per unit Area (W/m2).
Answer:
The intensity is 
Explanation:
From the question we are told that
The temperature is 
Now According to Stefan's law
Where 
is the Stefan Boltzmann constant with value 
Now the intensity of the cosmic background radiation emitted according to the unit from the question is mathematically evaluated as
=> 
=> 
substituting values
Answer:
No fallacy
Explanation:
The statement that at least 50% of the students at Northern State own an iPod is best categorized as no fallacy.
This statement is very true and consistent with the facts presented in the passage.
A fallacy is a mistaken belief usually based on biased arguments.
Total number of students sampled = 200
Number of iPod owners = 150
Percentage of iPod owners = 
x 100
Percentage of iPod owners = 
x 100 = 75%
We see that it is consistent to say that at least, 50% of the students in the sample are iPod owners.
