Physics

    Electrostatics
    If F is the force acting on the test charge qo, the electric field intensity E would be given by
    Author: rikazzz Comment
    Kinematics
    A train moves with a uniform velocity of 27 kmh−1 for 15 s. The distance covered by it is
    Author: rikazzz Comment
    Atomic and Nuclear Physics
    A helium nucleus comprising of two protons and two neutrons with a charge of 2e is
    Author: rikazzz Comment
    Electromagnetism
    A simple method of finding the direction of the magnetic field around the conductor is the
    Author: rikazzz Comment
    Physics
    Stars are held together by
    A star is a sphere of gas held together by its own gravity. The closest star to Earth is our very own Sun, so we have an example nearby that astronomers can study in detail.
    Author: rikazzz Comment
    Electromagnetism
    When the surface is held parallel to the magnetic lines of force, the number of lines of force is
    Author: rikazzz Comment
    Physics
    A current carrying conductor is associated with
    A current carrying conductor, such as a metal wire, will produce a magnetic field around it because of the motion of charge within the wire itself. This motion produces or sets up a magnetic field around the wire in the form of concentric circles. This electromagnetic effect is described in physics by the Biot-Savart Law, an experimentally deduced inverse-square law. The effect is also described by Ampere’s Law, which is derived from the Biot-Savart Law.
    Author: rikazzz Comment
    Physics
    Stars appears to move from east to west because
    The earth rotates from west to east.
    Author: rikazzz Comment
    Physics
    The rice is cooked more quickly in a pressure cooker because
    Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100°C (212°F) to 121°C (250°F). The hotter steam is able to transmit its thermal energy to the food at around 4 times the rate of conventional boiling.
    Author: rikazzz Comment
    Dynamics
    When we walk or run, to push the ground backward we need
    Author: rikazzz Comment