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Recent questions tagged energy and power
+1
vote
1
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If momentum is increased by 20% then K.E increases by (A) 44% (B) 55% (C) 66%
asked
Apr 7, 2019
in
JEE
by
kratos
work
collisions
class-11
jee
energy and power
jee mains
+1
vote
1
answer
Two bodies, A and B, of equal mass are kept at heights 20m and 30m respectively.
asked
Apr 6, 2019
in
Class 10
by
kratos
work
energy
energy and power
class-10
icse
force
power
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vote
1
answer
A simple pendulum consists of a bob of mass 1.8 kg attached to a string of length 2.3m.
asked
Apr 6, 2019
in
JEE
by
kratos
work
waves
dynamics
oscillations
class-11
jee
energy and power
jee mains
+2
votes
1
answer
Statement - I: In an elastic collision of two billiards *****, the kinetic energy is not conserved
asked
Apr 6, 2019
in
Class 12
by
kratos
work
neet
work energy and power
class-11
aiims
energy and power
+1
vote
1
answer
Write the advantages of solar cells.
asked
Apr 5, 2019
in
Class 10
by
kratos
work
cbse
energy and power
class-10
icse
force
sources of energy
+1
vote
1
answer
Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another
asked
Apr 5, 2019
in
Class 11
by
kratos
work
work energy and power
class-11
energy and power
+1
vote
1
answer
The turning effect produced in a rigid body around a fixed point by the application of force is called; (a) turning force (b) movement of force
asked
Apr 5, 2019
in
Class 10
by
kratos
work
energy and power
class-10
icse
force
+2
votes
1
answer
State the energy changes in the following devices while in use: 1. A loud speaker.
asked
Apr 5, 2019
in
Class 11
by
kratos
work
energy
class-11
energy and power
class-10
icse
force
power
+1
vote
1
answer
If kinetic energy is doubled, then its momentum becomes n times, here n is :
asked
Apr 5, 2019
in
Class 12
by
kratos
work
neet
work energy and power
aiims
jee
energy and power
class-10
jee mains
+3
votes
1
answer
Calculate the minimum distance between point of application of force and axis of rotation of a rigid body,
asked
Apr 4, 2019
in
Class 10
by
kratos
work
energy and power
class-10
icse
force
+2
votes
1
answer
What is the difference between renewable and non-renewable resources?
asked
Apr 3, 2019
in
Class 10
by
kratos
work
energy and power
class-10
icse
force
+2
votes
1
answer
Why is it easier to open a door by applying the force at the free end of it?
asked
Apr 3, 2019
in
Class 10
by
kratos
work
class-10
laws of motion
icse
force
energy and power
+1
vote
1
answer
Which graph can represent the total mechanical energy of the block-spring system as a function of x?
asked
Apr 3, 2019
in
JEE
by
kratos
work
jee
jee mains
energy and power
+3
votes
1
answer
A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to v(x) = bx^–2n
asked
Apr 3, 2019
in
Class 12
by
kratos
work energy and power
work
jee mains
class-11
neet
jee main 2020
jee
motion in a straight line
energy and power
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vote
1
answer
The mass of a car is 1000 kg. How much work is required to be done on it to make it move with a speed of 36 km/h ?
asked
Apr 3, 2019
in
JEE
by
kratos
work
class-11
jee
energy and power
jee mains
+2
votes
1
answer
A block of mass m slides up the incline shown with an initial speed vo in the position shown.
asked
Apr 2, 2019
in
JEE
by
kratos
work
jee
jee mains
energy and power
+3
votes
1
answer
Block A of mass 2.0kg and block B of mass 8.0kg are connected as shown by a spring of spring constant 80N/m and negligible mass.
asked
Apr 2, 2019
in
JEE
by
kratos
work
jee
jee mains
energy and power
+2
votes
1
answer
A frictionless track ABCDE ends in a circular loop of radius R. A body slides down the track from point A which is at a height h = 5 cm
asked
Apr 2, 2019
in
JEE
by
kratos
work
jee main 2020
class-11
jee
energy and power
motion in two dimension
jee mains
+3
votes
1
answer
A particle moves in a straight line with retardation proportional to its displacement.
asked
Apr 2, 2019
in
JEE
by
kratos
work
forces
work energy and power
class-11
jee
energy and power
kinematics
jee mains
+2
votes
1
answer
An arrow is shot from a bow at an angle of 40 from the horizontal at a speed of 24.0 m/*.
asked
Apr 1, 2019
in
JEE
by
kratos
work
work energy and power
energy
jee
kinematics
energy and power
class-10
icse
force
power
jee mains
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