a cube of sides 10cm is partly filled with sand of density 3.8g/cm3. If the weight of the sand is 200g, find the height in mm up to which it is filled in the container?

Which of these is NOT a characteristic of mammals? a. hair c. ectotherms b. large brain d. endotherms

Which statement is true? Hydroelectric power is generated from moving water. Oil, a renewable resource, is processed to make jet fuel. Propane, a renewable resource, is used in some heating systems.

A boy throws a ball up into the air with a speed of 12.3 m/s. The ball has a mass of 0.25 kg. How much gravitational potential energy will the ball have at the top of its flight? (Assume there is no air resistance.) A. 13,5 J B. 20.23 C. 18.9 J D.

A net downward force of 20 N causes a book to fall towards the ground at m/s2. What is the book's mass? Consider air resistance

What happens when the voltage increases and the resistance stays the same in a electrical circuit?

What type of friction is using chalk in the summer to draw on the ground in Copley square? Sliding friction Rolling friction static friction Fluid friction

Two energy resources that do not depend on the sun's energy

How much heat is givne out when 6.0g of water freezes at 0 degrees celcius the heat of fusion of water is 80.0 cal/g?

Which statement describes why ocean currents are considered convection currents? A) Warm water moves counterclockwise in the northern hemisphere B) Warm water rises and cold water moves in to replace it.

What kind of waves require a medium to travel? Question 6 options: Light Waves Mechanical waves All waves need a medium to travel Electromagnetic waves