A girl of mass 40 kg wearing high heel of radius 3mm. find the pressure exerted by her on the ground. [answer the question fast]

An electromagnetic wave in a vacuum has a wavelength of 0.032 m. What is its frequency?

5. Infer What might happen to sand in a valley if more sand is deposited on top of it?

A 4-kg cat is resting on a bookshelf that is 2 m high. What is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s^2? a. 6 J b. 8 J c. 20 J d. 78 J

Table salt (NaCl) dissolves in water. What happens when saltwater is made? A) The salt crystals sink to the bottom of the water. B) The salt crystals split into ions. C) The salt crystals float to the top of the water.

Which of these is true? A) Electricity in homes spread extremely quickly throughout the US. B) Today, every person in the world has access to electricity in her/his home.

What is an example of the theory that the best adapted organisms for an environment are the ones most likely to survive

What does not affect the apparent brightness of a star?

What happens when Dr. Hewitt places a current - carrying wire between the poles of the magnet for the first time?

The football player running toward the goal line has A. Potential energy B. Chemical energy C. Kinetic energy D. Elastic potential energy

If the density of an object is 30 g/cm3 and its volume is 10 cm3, what is its mass in grams?