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HELLO EVREYONE i ned the iit 09's part test solutions of brilliant tutorial. PLEASE help me. I dunt find it in their site. if u hv saved it in ur pc, plase mail it to me at paromita89@gmail.com . I only need the solutions of ...
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Q. what will be the condition if both roots are negative ? answer given 1. D> 0 2. a f (0) >0 3. -b/2a >0............................. is the 3rd point corect ? i feel it wil be -b/2a < 0.. pls tel me the answer n ...
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Q. A vector has a magnitude of 5 units and it is at an angle of 30° to the radius. The representation of the vector in polar coordinates is________________ Ans given is 5cos 30°UQ - 5 sin Ur i dint get the answer. mine was ...
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3.7 Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 km h–1 in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m s–2. I ...
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3.28 The velocity-time graph of a particle in one-dimensional motion is shown in Fig. 3.29 : *Image* Which of the following formulae are correct for describing the motion of the particle over the time-interval t1to t2: (a) x( ...
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A particle moves along a semicircular path of radius R in time t with constant speed. For the particle calculate average acceleration. answer given is : 2Î R/t2 why (2 x avg speed/time) is taken n not (2x avg velocity/time) & ...
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3.24 A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 m s–1. How much time does the ball take to return to his hands? If the lift starts movi ...
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3.9 Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h–1 in the direction A to B notices that a bus goes past him every 18 ...
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3.18 A police van moving on a highway with a speed of 30 km h–1 fires a bullet at a thief’s car speeding away in the same direction with a speed of 192 km h–1. If the muzzle speed of the bullet is 150 m s–1, with what ...
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Example 3.4 A ball is thrown vertically upwards with a velocity of 20 m s–1 from the top of a multistorey building. The height of the point from where the ball is thrown is 25.0 m from the ground. (a) How high will the ball ...
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3.20 Figure 3.23 gives the x-t plot of a particle executing one-dimensional simple harmonic motion. (You will learn about this motion in more detail in Chapter14). Give the signs of position, velocity and acceleration variabl ...
