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What are coral reefs? Discuss their types and formation.Describe the different types of mouthparts found in insects with the help of well labeled diagrams.
Describe the phenomenon of ‘evolution of behaviour’. Describe territorial behaviour and dominance hierarchy. How are these behaviour helpful in organizing vertebrate social organizations?
Compare the families Arecaceae & Liliaceae with the reference to the following features: Leaf, inflorescence, flowers, androecium, gynoecium.
Discuss the salient lines of evolution of sporophytes in bryophytes. Cite examples and make their illustrations to support your discussion.
A stone is dropped from the top of a 95.0 m building. The second stone is dropped 0.75 s later. How far from the ground is this second stone when the first stone hits the ground?
A car accelerates uniformly from rest to a velocity of 101 km/h east in 8.0 s. What is the magnitude of its acceleration?
You jog once around an oval track in 6.0 minutes at an average speed of 1.7 mIs. a) Determine the distance travelled? b) Determine the displacement?
A small child throws a rock vertically downward with an initial velocity of 6.0 m/s from the top of a 225 m building. How far does the rock travel in the first 6.0 seconds of its drop?
A car is traveling at a velocity of 82 km/h 32° N of W. a) Determine the west component of the velocity? b) Determine the south component of the velocity?
A small plane makes a complete circle with a radius of 3282 m in 2.0 min. Determine the centripetal acceleration of the plane?
A curve of radius 120 m is banked at an angle of 18°. At what speed can it be negotiated beneath icy conditions where friction is negligible?
If the speed is doubled, does the centripetal force double? If not by what factor does the centripetal force raise? Why?
An asteroid consists of an orbital radius of 4.8 x 1011 m and a mass of 1.4 x 1018 kg. Find out its period of rotation around the sun?
Jupiter is 7.78 x 1011 m from the sun and has a mass of 1.90 x 1027 kg. Determine the force of gravity due to the sun acting on Jupiter?
Compute the Kepler’s constant for objects rotating around the sun given that the earth has a period of revolution around the sun of 3.16 x 107 s and an orbital radius of 1.49 x 1011 m.
A car travels around a curved path that consists of a radius of 225 m at a constant speed of 26.0 m/s. Determine the centripetal acceleration of the car?
Joe wishes to hang a sign weighing 750 N so that cable A joined to the store makes a 30° angle as shown by θ in the figure. Cable B is attached to an adjoining building. Compute the tensio
A crazed 4-year old on a tricycle is chasing Jordan. When the child hits Jordan his acceleration is 1.5m/s2 and his mass is 32 kg. What is the force applied on Jordan by the angry 4-year old?
The distance between successive crest in a sequence of water waves is 4.0 m and the crests travel 9.0 m in 4.5 s. Determine the frequency of the waves?
A 1.3 kg mass on a spring consists of a maximum speed of 1.4m/s and a spring’s constant of 3.4 N/m. Determine its displacement when it is moving at 0.65m/s?
A person on a dock counts 8 troughs going by in 20 seconds. The distance between the troughs is .75m. Determine the speed of the waves?
A 915 kg car goes over a hill. If the radius of this curve is 43 m, how fast should the car travel so that it applies no force on the road at the crest?
You are riding your bike on a track which makes a vertical circular loop. The diameter of this loop is 10.0 m, how fast would you have to travel in order to remain in the loop?
Compute the speed of the moon in its orbit around the earth. (Radius of orbit 3.85 x 108 m and mass of moon 7.4 x 1022 kg).
On the surface of Planet Y, which has a mass of 4.83 x 1024 kg, an object has a weight of 50.0 N and a mass of 30.0 kg. Find out the radius of this planet?