Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Recent questions tagged medium
Questions
Consider the diagram below showing the trajectory of an object thrown from Point 0. Which of the following is true?
jeemain
physics
class11
work-power-energy
ch6
kinetic-energy
potential-energy
medium
asked
Aug 27, 2014
by
balaji.thirumalai
1
answer
Determine the rate of deceleration of $7.0 \;kg $ block sliding up an incline angled at $35^{\circ}$ to the horizontal. Assume that the coefficient of friction is $0.45$
jeemain
physics
class11
ch5
laws-of-motion
inclined-plane-with-effect-of-friction
newtons-second-law
medium
asked
Aug 27, 2014
by
meena.p
1
answer
The upper half of an inclined plane of inclination $\theta$ is perfectly smooth while the lower half is rough.A block starting from rest at the top of the plane will again come to rest at the bottom if the coefficient of friction between the block and the lower half of the plane is given by
jeemain
physics
class11
ch5
laws-of-motion
inclined- plane
frictionless-surface
newtons-second-law
medium
asked
Aug 27, 2014
by
sreemathi.v
1
answer
A block takes twice as much time to slide down a rough $45^{\large\circ}$ inclined plane as it takes to slide down an identical smooth $45^{\large\circ}$ inclined plane.The coefficient of kinetic friction between the block and the rough inclined plane is
jeemain
physics
class11
ch5
laws-of-motion
inclined- plane
frictionless-surface
newtons-second-law
medium
asked
Aug 27, 2014
by
sreemathi.v
2
answers
A particle of mass m is suspended from a ceiling through a string of length L. The particle moves in a horizontal circle of radius r. Find the speed of the particle.
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
circular-motion
centripetal-acceleration
medium
asked
Aug 26, 2014
by
meena.p
1
answer
A train has to negotiate a curve of radius $200\;m$ . By how much should the outer rails be raised with respect to the inner rails for a speed of $36\;km\;h^{-1}$. The distance between the rails is $ 1.5\;m$ Take $g=10 \;m /s^2$
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
circular-motion
centripetal-acceleration
medium
asked
Aug 26, 2014
by
meena.p
1
answer
A car moves at a speed of $36 \;km\;h^{-1}$ on a level road, The coefficient of fraction between the tyres and the road is $0.8 $. The car negotiates a curve of radius R. If $g =10 ms^2$ the car will skid (or slip) while negotiating the curve if value of R is
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
circular-motion
centripetal-acceleration
medium
asked
Aug 26, 2014
by
meena.p
1
answer
A block of mass 1.6 kg is attached to a horizontal spring that has a force constant of $1.0 \times 10^3 N/m$. The spring is compressed 2.0 cm and is then released from rest. Calculate the speed of the block as it passes through the equilibrium position $x= 0$ if the surface is frictionless.
jeemain
physics
class11
ch6
work-power-energy
potential-energy-of-a-spring
medium
work-done-by-a-spring
asked
Aug 25, 2014
by
balaji.thirumalai
1
answer
A 2 Kg wood block is on a level board and held against a spring of spring constant k=100 N/m which has been compressed .1 m. The block is released and pushed horizontally across the board. The coefficient of friction between the block and the board is $\mu_k = .2$. Find the velocity of the block just as it leaves the spring.
jeemain
physics
class11
ch6
work-power-energy
potential-energy-of-a-spring
medium
work-done-by-a-spring
asked
Aug 25, 2014
by
balaji.thirumalai
1
answer
A cyclist is moving with a speed of $6 ms^{-1} $, As he approaches a circular turn on the road of radius $120 \;m$ he applies brakes and reduces his speed at a constant rate of $ 0.4 \;ms^{-2} $. The magnitude of the net acceleration of the cyclist on the circular turn is
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
circular-motion
centripetal-acceleration
medium
asked
Aug 25, 2014
by
meena.p
1
answer
Dhoni throws his bat vertically upwards with an initial velocity of $26.2\;m/s$ Determine the height to which the bat will rise above its initial height.
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
motion-under-gravity
medium
asked
Aug 20, 2014
by
meena.p
2
answers
Three blocks of masses $m_1, m_2$ and $m_3$, with $m_1 \lt m_2 \lt m_3$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. If the three masses are in the ratio of $1:2:3$, what is the ratio of the contact forces of the two heavier blocks, i.e, $F_2:F_3$?
cl52619
cl52617
jeemain
physics
class11
ch5
laws-of-motion
masses-in-contact-on-frictionless-surface
fbd
connected-motion
medium
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Three blocks of masses $m_1, m_2$ and $m_3$, with $m_1 \lt m_2 \lt m_3$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. What is the contact force on $m_3$?
cl52619
cl52617
jeemain
physics
class11
ch5
laws-of-motion
masses-in-contact-on-frictionless-surface
fbd
connected-motion
medium
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Three blocks of masses $m_1, m_2$ and $m_3$, with $m_1 \lt m_2 \lt m_3$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. What is the contact force on $m_2$?
cl52617
jeemain
physics
class11
ch5
laws-of-motion
masses-in-contact-on-frictionless-surface
fbd
connected-motion
medium
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Two blocks of masses $m_1$ and $m_2$, with $m_1 \lt m_2$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. What is the contact force on $m_2$?
jeemain
physics
class11
ch5
laws-of-motion
masses-in-contact-on-frictionless-surface
fbd
connected-motion
medium
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the tension in the string between masses m$_1$ and m$_2$?
cl52611
cl52609
cl52603
jeemain
physics
class11
ch5
laws-of-motion
medium
newtons-second-law
fbd
connected-motion
frictionless-pulley
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the tension in the string between masses m$_2$ and m$_3$?
cl52609
cl52603
jeemain
physics
class11
ch5
laws-of-motion
medium
newtons-second-law
fbd
connected-motion
frictionless-pulley
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the common acceleration of the system?
cl52603
jeemain
physics
class11
ch5
laws-of-motion
medium
newtons-second-law
fbd
connected-motion
frictionless-pulley
asked
Aug 20, 2014
by
balaji.thirumalai
1
answer
A 5-kg block (m$_1$) and 2-kg block (m$_2$) are connected as shown on frictionless surface. Find the tension in the rope connecting the two blocks. Ignore any friction effects.
jeemain
physics
class11
ch5
laws-of-motion
medium
newtons-second-law
fbd
connected-motion
frictionless-pulley
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
What is the normal force on the object of mass m$_1$ (20 kg) shown in the diagram? What is the acceleration of the object?
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
From the top of a building 40 m tall, a ball a thrown vertically upwards with a velocity of $10\; ms^{-1}$ After how long will the ball hit the ground?
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 19, 2014
by
meena.p
2
answers
Consider a block of mass 5 kg on a table top initially at rest. Assume that the surface is frictionless. Let a pushing force of 50 N directed at an angle of 30$^\circ$ below the horizontal act on the block. Find the acceleration of the block and the normal force that the table exerts on the block.
jeemain
physics
class11
ch5
laws-of-motion
newtons-second-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
Let an object be at rest initially and you push it with constant force across a friction-less surface for a time internal $\Delta t$ resulting in a final speed of $v$ for the object. Now, if you repeat the experiment with a force that is twice as large, what will be the time internal needed to reach the same final speed $v$?
jeemain
physics
class11
ch5
laws-of-motion
newtons-first-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
Consider a cart on a horizontal friction-less surface. Once the cart has been given a push and released, it moves with constant velocity. What would have to be done in order to have the cart continue with constant acceleration?
cl52539
cl52537
jeemain
physics
class11
ch5
laws-of-motion
newtons-first-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
Consider a cart on a horizontal friction-less surface. Once the cart has been given a push and released, what will happen to the cart?
cl52537
jeemain
physics
class11
ch5
laws-of-motion
newtons-first-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
Which of the following statements is MOST correct?
jeemain
physics
class11
ch5
laws-of-motion
newtons-first-law
medium
asked
Aug 19, 2014
by
balaji.thirumalai
1
answer
A body travelling with uniform acceleration crosses two points A and B with velocities $20\;ms^{-1}$ and $30 \;ms^{-1}$ respectively . The speed of the body at the mid-point of A and B is
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 19, 2014
by
meena.p
1
answer
A bus starts from rest with an acceleration of $ 1\;ms^{-2}$ A man who is $48\;m$ behind the bus starts with a uniform velocity of $ 10\;ms^{-1}$. The minimum time after which the man will catch the bus is
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 19, 2014
by
meena.p
1
answer
A stone is thrown upwards with velocity v. At half the height, its velocity is
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 14, 2014
by
meena.p
1
answer
A ball is thrown vertically upwards from the top of a tower of height h with velocity v. The ball strikes the ground after
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 14, 2014
by
meena.p
1
answer
Given the following 2 statements, which of the following choices is correct?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
uniform-circular-motion
medium
asked
Aug 14, 2014
by
sreemathi.v
1
answer
A small block slides without friction down an inclined plane starting from rest. Let $S_n$ be the distance travelled from time $t- n-1$ to $t=n$. Then $\large\frac{S_n}{S_{n_1}}$ is
jeemain
physics
class11
kinematics
ch3
motion-in-a-straight-line
acceleration
medium
asked
Aug 14, 2014
by
meena.p
1
answer
Two persons P and Q are standing 54m apart on a long horizontal belt moving with a speed of $4ms^{-1}$ in the direction from P to Q.Person P rolls a round stone towards person Q with speed of $9ms^{-1}$ with respect to the belt.The velocity of stone with respect to an observer on a stationary platform is
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
relative-velocity-in-two-dimensions
medium
asked
Aug 14, 2014
by
sreemathi.v
1
answer
A boat heading due north crosses a wide river with a speed of 10.0 km/h relative to the water. The water in the river has a uniform speed of 5.00 km/h due east relative to the Earth. Determine the velocity of the boat relative to an observer standing on either bank.
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
relative-velocity-in-two-dimensions
medium
asked
Aug 13, 2014
by
sreemathi.v
1
answer
A sample of wustite $Fe_xO$ contains one $Fe(III)$ for every three $Fe(II).$ Calculate the value of x.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
The composition of a sample of wiistite is $Fe_{0.93} O_{1.00-}$. What percentage of the ion is present in the form of $Fe(III)?$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
Calculate the percentage of void volume in the body centred
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
You start from a point and your first move is 5 m at an angle of 53.1$^{\circ}$. Your second move was 6 m along the x-axis and some unknown distance along the y-axis. Your third move was some unknown distance along the x-axis and -3 m along the y-axis. If you ended up at a point 5.39 m from where you started and 21.8$^{\circ}$ below the x-axis, calculate the unknown components of your second ($y_2$) and third ($x_3$) moves .
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
medium
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
A jet plane takes off with a velocity of 300 km/s at a bearing of 60$^{\circ}$. A wind with a velocity of 80 km/s NW blows it off course. What is the resultant velocity of the jet plane (magnitude and the bearing)?
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
scalars-and-vectors
vectors
medium
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
Calculate the percentage of void volume in the primitive
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
A hiker begins a trip by first walking 25 km southeast from her car. She stops and sets up her tent for the night. On the second day, she walks 40 km in a direction 60$^{\circ}$ north of east, at which point she discovers a forest ranger’s tower. Write the total displacement in unit vector form.
cl52371
jeemain
physics
class11
ch4
kinematics
motion-in-a-plane
vectors
medium
asked
Aug 11, 2014
by
balaji.thirumalai
1
answer
Lil occurs as cubical - closest packing . If the edge length of a unit cell is $624\;pm$ , determine the ionic radii of $Li^{+}$ and $I^{-}$ ions.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calculate the ratio of density of NaCl to that KCl
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
KCl crystallizes in the same type of lattice as does $NaCl$ . Given that $\large\frac{r_{Na^{+}}}{r_{cl^{-}}}$$=0.5$ and $\large\frac{r_{Na^{+}}}{r_{K^{+}}}$$=0.5$ calcute the ratio of the unit cell for $KCl$ to that for $NaCl$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
If the radius of $Cs^{+}$ is $169\;pm$ and that of $Cl^{-}$ is $181\;pm$ , predict the structure of $CsCl$. What is the coordination number of $Cs^{+}$ ion ?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 11, 2014
by
meena.p
1
answer
A solid $A^{+}B^{-}$ has an $NaCl$ type closet packed structure . If the radius of the anion is $250\;pm$ What is the radius of the cation ?
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
The atomic radius of stronitum is $215\;pm$ and it crystallizes with a cubical closest - packed structure . Calculate the density of strontium. The molar mass of strontium is $ 87.6\;g\;mol^{-1}$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals. The edge length of unit cell is $412\;pm$. Determine the ionic radius of $Cs^{+}$ if the ionic radius of $Cl^{-}$ if the ionic radius of $Cl^{-}$ is $181$ P.m Given $M(C_s)=133\;g\;mol^{-1}$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Caesium chloride may be considered to form interpenetrating simple primitive cubic crystals. The edge length of unit cell is $412\;pm$. Determine the density of $CsCl$
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
The edge length of cubic unit cell of metallic calcium is $556\;pm$ If the density of calcium is $1.54 \;g\;cm^{-3}$ and its molar mass is $40.08];g\;mol^{-1}$ calculate the radius of calcium atom.
jeemain
chemistry
physical-chemistry
class12
ch2
solutions
solved problems
composition-of-a-solution
medium
asked
Aug 8, 2014
by
meena.p
1
answer
Page:
« prev
1
...
22
23
24
25
26
27
28
...
149
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...