Question
The sum of the perimeters of a square and a rectangle is
120 metres. If the sum of the length and breadth of the rectangle is 32 cm, then find the area of the square.Solution
Perimeter of the rectangle = 2 x 32 = 64 cm Perimeter of the square = 120 β 64 = 56 cm Each side of the square = 56/4 = 14 cm Therefore, area of the square = 142Β = 196 cm2
The material which can be deformed permanently by heat and pressure is called a:
When a passenger in a moving bus is suddenly thrown forward when the bus stops, this is explained by:
A solid non-conducting sphere of radius R carries a uniform volume charge density Ο. What is the ratio of electric field at r = R (surface) to that at ...
Figure-out the case from the following in which the rope will break if an animal of mass 30 kg climbs on a rope, which can stand a maximum tension of 5...
Why do brads not have respiratory trouble at the time of flying at high all?
A projectile is launched at an angle of 30Β° with the horizontal and remains in the air for 5 seconds. What is the range of the projectile? (Take g = 10...
Charges +q and βq are placed at (βd, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?
A brass boiler has a base area of 0.2 m2 and thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a stove. Calculate th...
What is the magnitude of magnetic force per unit length on a wire carrying a current of 10 A and making an angle of 30° with the direction of a unif...
