Home

Skating on ice is possible because

A. the surface of ice is smooth

B. ice is cold

C. the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water

D. the pressure on the ice due to skate raises its melting point

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Radio waves sent out by radio stations are reflected by
  2. Cosmic rays are
  3. The unit of power in SI is
  4. The phenomenon of radioactivity was discovered by
  5. Among the following the most suitable material for the core of an electro-magnet is
  6. The velocity of sound in air
  7. Who discovered that the Cree Call acceleration Is the same for any object at a given place?
  8. In a concert hall reverberation is controlled by
  9. In a hydraulic pressure
  10. A wire conveying a current deflects a pivoted magnetic needle. This was discovered by
  11. It is difficult to bon potatoes at the top or a mountain because
  12. A lactometer la used to
  13. The maximum displacement of the particle in a mechanical wave motion is known as
  14. A projectile is fired at an angle with the horizontal with a small velocity. Its horizontal range will…
  15. The speed of sound in a medium depends upon the properties of the medium such as
  16. The best estimates of the age of the earth comes from the studies of
  17. The fact that two large ships travelling on close parallel courses in the same direction tend to move…
  18. Stars twinkle because of
  19. Galaxies emit
  20. An ohm is a unit of
  21. A device used in a ship for the purpose of measuring the depth of the sea is
  22. Mercury is used in thermometers because
  23. The power of a lens is
  24. Hydrophone is an instrument used
  25. When a body Is taken to the poles from the equator, Its weight becomes
  26. Which force is used when milk is churned to separate cream?
  27. The image of an object formed on the retina of the eye is
  28. Rays similar to X-rays but of smaller wave length that are given off by radioactive substances are
  29. A person does not sink in the Dead Sea because
  30. The stem of a vibrating tuning fork is pressed against a sound box. Then