Question
When 40% of a number is added to the number itself, the
result is 21 more than the original number. What is the resulting number?Solution
ATQ,
Let the number be ‘x’
According to the question,
0.40x = 21
⇒ x = 21 / 0.40 = 52.5
Required number = 52.5 + 21 = 73.5
During ______ motion of an object along a straight line, the change in velocity of the object for any time interval is zero.
Consider the following two statements
(A) Kirchhoff's junction law follows from the conservation of charge.
(B) Kirchhoff's loop law follo...
A current element is placed at origin. At point P(1 mm,1 mm), the magnetic field due to this element is:
What is the value of 1 horsepower in watts?
A sudden drop in barometric pressure indicates which of the following?
Global warming is expected to result in
A nucleus with mass number A and atomic number Z undergoes β⁻ decay. Which of the following is correct about the daughter nucleus?
A copper block of mass 3 kg is heated in a furnace to a temperature of 450°C and then placed on a large ice block. Find the maximum amount of ice that...
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...