Answer:
The 6 fingers allele is dominant
Explanation:
We are told that the the individual is genotypically heterozygous, that is the have both types of the finger allele: the 5 finger allele and the 6 fingers allele however phenotypically, 6 fingers are observed. From this we can conclude that the 6 fingers allele is the one that is dominant because it is the one that is expressed phenotypically.
 
        
             
        
        
        
Answer:
Solution
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Given:
Mass of body = 30 kg
gravitational acceleration on the moon = 1.62 m/s 
2
 
Weight of the body on the moon = Mass of the body×gravitational acceleration on the moon=30×1.62=48 N
 
        
             
        
        
        
D = distance between the cars at the start of time = 680 km
v₁ = speed of one car 
v₂ = speed of other car = v₁ - 10
t = time taken to meet = 4 h
distance traveled by one car in time "t" + distance traveled by other car in time "t" = D 
v₁ t + v₂ t = D 
(v₁ + v₂) t = D
inserting the values 
(v₁ + v₁ - 10) (4) = 680
 v₁ = 90 km/h
rate of slower car is given as 
v₂ = v₁ - 10
v₂ = 90 - 10 = 80 km/h
 
        
             
        
        
        
Answer:

Explanation:
It is given that,
Mass of Albertine, m = 60 kg
It can be assumed, the spring constant of the spring, k = 95 N/m
Compression in the spring, x = 5 m
A glass sits 19.8 m from her outstretched foot, h = 19.8 m
When she just reach the glass without knocking it over, a force of friction will also act on it. Using the conservation of energy for the spring mass system such that,




So, the coefficient of kinetic friction between the chair and the waxed floor is 0.101. Hence, this is the required solution.
 
        
             
        
        
        
Answer:
option (D) is correct. 
Explanation:
According to the work energy theorem, the work done by all forces is equal to the change in kinetic energy of the body. 
 the kinetic energy of a body is directly proportional to the square of the speed of the body. 
As the kinetic energy change, the speed of the body also change. 
Option (D) is correct.