Unanswered Class Vii X Physics Questions

cum on X /IX USE THE FORUM ...

Which of the following will never be found inside a robot? ...

The use of Fulcrum: ...

Use of class III lever ...

If I am walking towards east, friction acting on me has a direction: ...

Match the following: I)pulley    p)always changes direction of application of force II)class I lever q) vr always greater than 1 III) class II lever r) vr always less than 1 IV) class III lever s) lever ...

Mechanical advantage is ...

Condition for equilibrium: ...

Gradient of an inclined plane gives us an idea about (according to literal definition): ...

A body of mass M is kept in rest on an inclined plane of inclination angle ~ heta . Net force acting on it is: ...

Which of the following is/are correct: ...

Weight of the body is: ...

Supposing surface is frictionless, acceleration = ...

Normal reaction = ...

*Image* The large block m1 is 10 kg, and the smaller block m2 is 1 kg. The applied force, F is 33 N.Find contact force between the two bodies (in newtons) ...

If coefficient of friction is 2/sqrt(3). What is the force of friction acting? ...

A piece of ice is floating in a glass filled with water .How will the level if water change as the ice melts ? ...

If you walk 5.0 m horizontally forward at a constant velocity carrying a 10-N object, the amount of work you do is  ...

In the following reaction, identify the products Na2CO3(aq) + 2HCl(aq) → _________________ ...

Which of the following is not a unit of pressure? ...

A house subtends a right angle at the window of an opposite house and the angle of elevation of the window; from the bottom of the first house is 60o. If the distance between the two houses be 6 meters, then the height of the ...

The angle of elevation of the sun, when the shadow of the pole is sqrt{3} times the height of the pole, is ...

The type of energy possessed by a simple pendulum, when it is at the mean position is ...

Can work be done on a system if there is no motion? ...

A uniform meter scale balances at the 40 cm mark when weights of 10 g and 20 g are suspended from the 10 cm and 20 cm marks. The weight of the metre scale is ...

HOW CAN THE VELOCITY OF ULTRASOUND, INFRA SOUND AND AUDIO WAVES BE EQUAL? IN THE Q.10 OF THE RECENT CHAKRAVYUH TEST OF CLASS 7 THE OPTIONS O B AND C ARE THE SAME BUT WHY I AM GIVEN WRONG WHEN I PRESS THE OPTION C ? ...

A concave lens can be converging if it is placed in a liquid of (a) R.I more than its R.I (b)R.I less than its R.I (c)both cases possible (d)never possible ...

Can you people please name a site where I can learn about the mechanism of different simple gadgets like camera,telescope,radio etc. but with nice illustrations and simple words...please. ...

What is optical density exactly???why is it different from the normal density???both are based on the arrangement of molecules in diff. medium....then.... ...

Difference between which two points gives 230 volts as the p.d.? ...