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Popular Questions
- the mean of five observations is 5 and their variance is 9.20. if there of the given five observations are 1, 3
- A student scores the following makes in five tests: 45, 54, 41, 57, 43.
- if the data x1, x2,..........,x10 is such that the mean of first four of these is 11,
- Should I go out of India and study after the pandemic?
- A bag contains 30 white balls and 10 red balls. 16 balls are drawn oneby one randomly from bag with replacement,
- A data consists of observations:
- A data consists of observations:
- A data consists of observations:
- IB Online Tuitions For Chemistry (HL), Biology (HL) & Mathematics (HL)
- if twolike parallel forces P/Q N and q/p have a resultant 2N, then
- A particle is thrown vertically upwards with a velocity of 490 cm/s. It will return to this position after
- A particle is moving in a straight line with uniform velocity. Its acceleration is
- Three forces P, Q, R acting at a point in a plane. The angle between P and Q, Q and R are 150 degree and 120 degree respectively, ..
- Two bodies of masses m and 4m are moving with equal momentum. The ratio of their KE is
- Three forces of magnitudes 30, 60 and P acting at a point are in equilibrium. If the angle between the first two is 60 degree, the..
- A ball is dropped from a height h above a horizontal plane. If the coefficient of restitution is e, through what height will the b..
- Forces of magnitudes 5 N, 10 N, 15 N and 20 N act on a particle in the direction of North, South, East and West, respectively. The..
- A particle starting from a point A and moving with a positive constant acceleration along a straight line reaches another point B ..
- A particle moves in a straight line so that it covered a distance
- The amount of force that is needed to accelerate a truck of mass 36000 kg from rest to a velocity of 60 km/h in 20 s is
- A train of length 200 m, travelling at 30 m/s overtakes another train of length 300 m, travelling at 20 m/s in the same direction...
- the mean and median of the following ten number in increasing order
- if the standard deviations of the numbers
- A particle is dropped from a height 12 g m and 4 s after another particle is projected from the ground towards it with a velocity ..
- the outcome of each of 30 items was observed; 10 items
- The acceleration of a particle starting from rest moving in a straight line with uniform acceleration is 8 m/s^2. The time taken b..
- if mean and standard deviations of 5 observations
- The mean and variance of seven observations are 8 and 16,
- if both the mean and the statement deviations of 50 observations
- If 3P and 4P are resultant of a force 5P, then angle between 3P and 5P is
- If in a projectile motion range R is maximum, then relation between H and R is
- If the displacement, velocity and acceleration of a particle at time t is x, v and f respectively, then which one is correct?
- If two equal components (P) of a force (F) are acting at an angle 120 degree , then F is equal to
- The displacement x of a particle at time t is given by x = At^ 2 + Bt + C, where A, B and C are constants and v is velocity of a p..
- The displacement of a particle at time t is x , where x = t 4 - kt 3 . If the velocity of the particle at time t = 2 is minimum , ..
- The velocity of a particle at time t is given by the relation v = 6t - t^ 2 / 6. The distance travelled in 3 s is, if s = 0 at t =..
- A ball falls from rest from top of a tower. If the ball reaches the foot of the tower in 3 s, then height of tower is (take g = 10..
