Question
A, B and C enter into partnership by making investments
in the ratio 3: 5: 7. After a year, C invests another Rs 337600 while A withdraws Rs 45600. The ratio of investments then changes to 24: 59: 167. How much does A invest initially?Solution
Let their investment be =3x, 5x, 7x After a year A investment = 3x - 45600 B investment= 5x C investment =7x + 337600 New ratio = 3x - 45600: 5x (3x-45600)/5x=24/59 x = 47200 So A investment =47200 × 3 =1, 41, 600
A machine does 600 J of work in 2 minutes. Find its power.
A body of mass 3 kg has a velocity of 4 m/s. Find its kinetic energy.
Which physical quantity has unit “Joule/second”?
If a lens forms an image of magnification -2, what is the nature of the image?
What is the unit of electric current?
For a cell terminal potential difference is 3.5 V when circuit is open and reduces to 2.5 V when cell is connected to a resistance of R = 10Ω then...
An object initially at rest explodes into several fragments. If no external forces act during the explosion, the center of mass of the fragments will:
Which of the following gas is used in the manufacture of Vanaspati Ghee?
In a long solenoid of 200 turns/cm carrying a current i, the magnetic field at center is 6.28×10-2 T. If a second solenoid with 100 turns/c...
What is the SI unit of power?