The speed of the car at the bottom of the dip given the parameters in the equation is; v = 7 m/s
- Since the motion is circular, it means that the acceleration of the car will be acting towards the centre of the circle and as a result the acceleration will be acting upwards with the formula; a = v²/r
- Now, if the mass of a passenger is denoted as m, then the net force on the passenger will be;
F = mv²/r
- Also, in the roller coaster, two other forces are acting which are the force of gravity(F_g) acting downward and also the force of the seat(F_seat) acting upwards. Thus, from equilibrium of forces, we can say that;
F_seat - F_g= mv²/r
Where F_g= mg.
Thus; F_seat - mg mv²/r
1.5mg - mg mv²/r
divide through by m to get; 0.5g = v²/r
Plug in the relevant values;
0.5(9.8) = v²/10
v² = 0.5 x 9.8 × 10
v² = 49
v = 7
The speed of Car is 7 m/s
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Answer: tight junction
Explanation:
Tight junctions are the multiprotein complexes. The function of these complexes is to prevent the leakage of the transported water and solutes. These junctions seals the pathway between two cells. These junctions form an impermeable barrier against the fluid. The tight junctions hold the cells together and are protective in nature. The tight junction are present on the epidermal cells of the skin it keeps the skin waterproof.
The correct answer is: c.)Bilaterally symmetric animals can be streamlined for swimming, but radially symmetric animals cannot.
In radial symmetry the body can be divided by several cutting planes that produce roughly identical pieces. Organisms with such symmetry are usually cylinder, with no left or right sides only top and a bottom surface. Radial symmetric organisms are symmetrical about an axis that goes from the center of the oral (top) surface, to the center of the opposite (bottom) end. It is suitable for sessile animals or slow moving animals.
In bilateral symmetry one plane can divide an organism into roughly mirror image halves (the right and left halves). One of the advantages of the organisms with bilateral symmetry is the streamlining of the body.
Answer:
mixture
Explanation:
Chromatography is a process to separate the various substances present in mixtures based on their properties such as charges, size, affinity, etc.
A pure substance cannot be separated into various substances as it consists of a single type of substance only. A mixture consists of two or more substances that are separated by various physical and chemical methods.
The ink was separated into different colors on the chromatographic paper suggesting that it was a mixture of various colors. Therefore, the ink was a mixture, not a pure substance.