Physics

    Physics
    Which of the following terms is not used in the field of physics?
    Stock value is not used in the field of physics.
    Physics
    What factors contribute to global winds?
    Global winds are affected by convection current, pressure gradients, the Coriolis effect, and friction.
    Physics
    A radioactive substance does not undergo any change (in mass or charge) during
    Gamma-rays do not carry any charge. These rays do not have any mass and hence can not be considered to be made up of particles.
    Physics
    A real gas can act as an ideal gas in
    Real gases approximate ideal gases when their pressure is relatively low, and their temperature reasonably high. A real gas deviates increasingly from ideality as it is compressed and cooled to near the point at which it will condense into a liquid. Compressing forces the molecules closer together so that intermolecular forces become stronger, and cooling reduces the kinetic energy of the molecules, so that they are more easily held by these forces.
    Physics
    Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open
    Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open at a place in a valley below sea level.
    Everyday Science
    Which of the following devices is used to measure potential difference between two points in a circuit?
    Physics
    Fish and other aquatic creatures can live inside a deep frozen pond because
    All liquids have a boiling point and a freezing point. Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds.
    Everyday Science
    The heat received by a person sitting in front of a fire is due to which of the following mode(s) of heat of transfer?i) Conductionii) Convection iii) Radiation
    Radiation refers to the emission of energy in rays or waves. Heat moves through space as energy waves. It is the type of heat one feels when sitting in front of a fireplace or around a campfire. It travels in straight lines at the speed of light.
    Everyday Science
    For nearby objects, eye lens is contracted and squeezed into a more convex shape by
    So for nearby objects, the ciliary muscles contract and squeeze the lens into a more convex shape. This increase in the curvature of the lens corresponds to a shorter focal length.
    Physics
    Who was the first scientist to discover Electrons?
    J.J. Thompson was the first scientists to discover electrons.