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Awantika Srivastava
Subject: Physics
, asked on 21/9/16
it is better to walk or run when rain is slanting ?
Answer
2
Awantika Srivastava
Subject: Physics
, asked on 17/9/16
is it better to walk or run in a rain ? explain with reason.
Answer
1
Revant Garg
Subject: Physics
, asked on 6/5/16
a particle moves in the x-y plane according to the equation x=-8sin180 t and y=-2 cos 360 t where t is time. find the equation of path of the particle
Answer
1
Revant Garg
Subject: Physics
, asked on 6/5/16
a particle moves in x-y plane such that its position vector varies with time as r=(2sin3t)i+2(1-cos 3t)j.find the equation of trajectory of the particle
Answer
1
Revant Garg
Subject: Physics
, asked on 6/5/16
the base of a pillar of height 10 m is situated at a distance of 20 root 2 m from you at south of east direction. find the position vector of a bird sitting on the top of the pillar. assume yourself at the origin and horizontal plane as x-z plane
Answer
1
Usman
Subject: Physics
, asked on 1/2/16
Derive an expression for acceleration of an object in uniform circular motion.
Answer
1
Christina
Subject: Physics
, asked on 1/7/15
A balloon is ascending at the rate of 14 m/s at a height of 98 m above the ground when a packet is dropped from the balloon. After how much time and with what velocity does it reach the ground?
Answer
1
Christina
Subject: Physics
, asked on 1/7/15
An electron travelling with a speed of 5 x 10
3
m/s passes through an electric field with an acceleration of 10
12
m/s
2
. How long will it take for the electron to double its speed?
Answer
1
Christina
Subject: Physics
, asked on 1/7/15
A body goes from A to B with a velocity of 40 m/s and comes back from B to A with a velocity of 60 m/s. What is the (i) average velocity during the whole journey and (ii) average speed during the whole journey?
Answer
1
Christina
Subject: Physics
, asked on 1/7/15
The length covered by a body is found to be directly proportional to the square of time. What is the nature of acceleration?
Answer
1
Christina
Subject: Physics
, asked on 1/7/15
When a body accelerates by αt, what is the velocity after time ‘t’, when it starts from rest?
Answer
1
Jay Shah
Subject: Physics
, asked on 19/9/16
A gun with a muzzle velocity of 500 m/s shoots a bullet at a bird 50 m away. To hit the bird , the gun should be aimed:-
(g=10 m/s
2
)
a)directly towards the bird along the line joining the gun and bird.
b) 10 cmhigh above the bird
c) 5 cm high above the bird
d) 5 cmbelow the bird
Answer
1
Jay Shah
Subject: Physics
, asked on 18/9/16
A particle leaves the originwith an initial velocity vector u = (3i) m/s and a constant acceleration vector a = (-1.0i - 0.5j) m/s
2
. Its velocity vector v and position vector r when it reaches its maximum x- coordinate are -
a) vector v = -2j b) vector v = (-1.5j) m/s c) vector r = (4.5i-2.25j) m
d) vector r = (3i-2j) m
Answer
1
Ashwin Singh Rautela
Subject: Physics
, asked on 17/9/16
What is the unit vector perpendicular to the plane vectors a and b.
" Please answer this question and not refer me to any other question. the question U referredI
didn't understood how it is related to my question "
Answer
2
Ashwin Singh Rautela
Subject: Physics
, asked on 16/9/16
what is the unit vector perpendicular to the plane of vectors a and b.
Answer
1
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What are you looking for?
(g=10 m/s2)
a)directly towards the bird along the line joining the gun and bird.
b) 10 cmhigh above the bird
c) 5 cm high above the bird
d) 5 cmbelow the bird
a) vector v = -2j b) vector v = (-1.5j) m/s c) vector r = (4.5i-2.25j) m
d) vector r = (3i-2j) m
" Please answer this question and not refer me to any other question. the question U referredI
didn't understood how it is related to my question "