ஒரு பேருந்து என்றால் 30 கி.மீ தூரத்தை 45 நிமிடங்களில் சென்றடையும். அதன் வேகம்:m//s | 7 | இயற்பியல்...

What are the two angles of projection of a projectile projected with velocity of 30 m//s , so that the horizontal range is 45 m . Take, g= 10 m//s^(2) .

A particle of mass 20 kg executing uniform circular motion on a path of radius 4.5 m , if the 30kg m//s is the magnitude of licear momentum . Then the radian force acting on the particle is

At a certain temperature 6% molecules of a gas have speed 2 m//s , 9% have speed 3 m//s , 30% have speed 9 m//s , 28% have speed 11 m//s , 20% have speed 13 m//s and 7% have speed 18 m//s . Calculate U_(mp), U_(av) and U_(rms) at that temperature.

Which of the following statements are true? 16 : 24=20 : 30 (ii) 21 :6=35 : 10 12 : 18=28 : 12 (iv) 51 : 58=85 : 102 40 m e n : 200 m e n=R s .5 : R s .25 99 kg : 45 kg=R s .44 : R s .20

The length, breadth and height of a room are 7.5 m, 4.5 m and 3.0 m respectively. There is a door of measure 2.0 m xx 1.0 m and also 2 windows each of measure 1.2 m and 0.75 m. Find the cost of white washing its walls and roof at the rate of Rs. 1.20 per square metre.

A 5 kg object with speed of 30 m//s strikes a steel plants at an angle 45^(@) and rebound at the same speed and same angle (Fig. 3.43). Calculate. (a) the magntiude of the change is momentum of the object and (b) the change in the magnitude of the momentum of the object.

Deepa rides her bike at an average speed of 30 km/hr and reaches her destination in6 hours. Hema covers the same distance in 4 hours. If Deepa increases her average speed by 10 km/hr and Hema increases her average speed by 5 km/hr what would be the difference in their time taken to reach the destination? 40 m inu t e s b. 45 m inu t e s c. 4 m inu t e s d. 1 hou r e. none of these

Z’s house is 45m South to P’s house. J’s house is 50m South to H’s house. Q’s house is 30m West to Z’s house. M’s house is 50m North to P’s house. H’s house is 30m West to M’s house. In which direction and at what distance is J’s house with reference to Q’s house?