Which of the following chemical equations is balanced?

2. A block of wood of uniform density floats so that exactly one quarter of its volume is under water. The density of water is 1000 kg/m3. What is the density of the block?

Through which medium will sound travel most rapidly?

What is refraction ...

A pump and its horizontal intake pipe are located 82 m beneath the surface of a large reservoir. the speed of the water in the intake pipe causes the pressure there to decrease, in accord with bernoulli's principle.

Which system protects us from radiation and the vacuum of space? a. geosphere b. hydrosphere c. atmosphere d. biosphere

A 61 kg skier on level snow coasts 184 m to a stop from a speed of 12 m/s. (a) Use the Work-Energy Theorem to find the coefficient of kinetic friction between the skis and snow.

A zebra starts from rest and accelerates at 1.9 m/s2 what will be the acceleration after 5 seconds

When you measure the temperature of an object you are measuring

What are two ways the Doppler effect can be applied in everyday life?

The two dry sand samples are examined by changing one parameter. The independent variable, the one that is intentionally manipulated between the two samples, is the (temperature over time, mass of each sample, or type of material used)