Answer:
6. Dolphins have two nasal passages
7. In a whale flipper there are:
Limbs: Cetacean flippers have the same bones as the forelimbs of other mammals. The humerus, radius, ulna, carpals, metacarpals and phalanges are all present. However, in cetaceans the radius and ulna (forearm) and humerus (upper arm) are fused.
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c. Energy and work
Explanation:
Energy and work done have the same unit of measurement. The unit of energy and work done is taken as the Joules(J).
- Energy is defined as the ability to do work. Energy is of two main forms.
- Potential energy is the energy at rest while kinetic energy is due to the motion of a body.
- All forms of quantitative energy calculations are expressed as the joules.
- Work done is the force applied to move a body through a particular distance.
Learn more:
Work done brainly.com/question/9100769
Energy brainly.com/question/4997571
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Answer:
4.57 degree
Explanation:
As the dolphin is under water, so the angle is angle of refraction which is equal to 48.4 degree.
refractive index of water, n = 1.333
Let the angle of incidence which is the angle between the incident ray and the normal is i.
By use of Snell's law
i = 85.43 degree
Angle made with the horizon = 90 - 85.43 = 4.57 degree
B
when hurricanes hit land, it weakens them
Calories would denote the amount of heat.
Givens are:
Mass = 500 g
t0 = 20C
tf = 30C
C = 1 cal/gC
Formula:
Q=MCt
500g (1cal/gC) 10C= 5000 cal
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