physics
1.Give examples of a one-dimensional motion where (a) the particle moving along positive x-direction comes to rest periodically and moves forward. (b) the particle moving along positive x-direction comes to rest periodically and moves backward. 2.Give example of a motion where...
physics
1.In one dimensional motion, instantaneous speed v satisfies 0 ≤ v < v0. (a) The displacement in time T must always take non-negative values. (b) The displacement x in time T satisfies – vo T < x < vo T. (c) The acceleration is always a non-negative number....
trignometry
show that cos2x=1-tan^ 2 x /1+tan^2x=2cos^2x-1
maths
can you help me with this? cos2A=cossquareA-sinsquareA/cossquareA+sinsquareA=cossquareA(1-tansquareA)/cossquareA(1+tansquareA) I encountered this situation while solving trignometric problem.can you tell how does this come?
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time graph and if you can th...
physics
A car accelerates from rest at a constant rate A for some time after which it retards at a constant rate B to come to rest. If the time elapsed is T second,calculate the maximum velocity reached?(please try solving this problem by plotting velocity time graph and if you can th...
math
Is g = {(1, 1), (2, 3), (3, 5), (4, 7)} a function? Justify. If this is described by the relation, g (x) = αx + β, then what values should be assigned to α and β?
physics
Measure of two quantities along with the precision of respective measuring instrument is A = 2.5 m s–1 ± 0.5 m s–1 B = 0.10 s ± 0.01 s The value of A B will be (a) (0.25 ± 0.08) m (b) (0.25 ± 0.5) m (c) (0.25 ± 0.05) m (d) (0.25 &pl...
physics
The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, respectively. The area of the sheet in appropriate significant figures and error is (a) 164 ± 3 cm2 (b) 163.62 ± 2.6 cm2 (c) 163.6 ± 2.6 cm2 (d) 163.62 ± 3 cm2 please explain me w...
physics
1.The potiential energy of a particle varies with distance x from a fixed origin as v=A√x/x+B where A and B are constants.Find the dimensions of AB. 2.The refractive index of a material is given by the equation ʯ=A+B/ʎsquare where A and B are constants,ʎ i...
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