Who was the first scientist to observe cells? a. Theodor Schwann c. Anton van Leeuwenhoek b. Robert Hooke d. Matthias Schleiden

Which of the following statements about flux are true? The unit of flux is Nm2/C The total flux through a surface completely enclosing a charge q is q/ε The total flux through a closed surface can be positive or negative, depending on whether the

An object traveling at a 5.0 m/s East has a mass of 4.0 kg. What is the magnitude of the object's momentum? 0.80 kgm/s 1.3 kgm/s 10. kgm/s 20. kgm/s

What is one advantage infrared astronomy has over visible light astronomy?

A thin rectangular piece of wood floats in water. You slowly pour oil with a density equal to that of the wood on the surface of the water until the height of the oil above the water is twice the height of the piece of wood.

I drop a meter stick, and catch it as it falls. If it fell exactly 22 cm, how much did it take me to catch the meter stick (what was my reaction time) ?

How are hypotheses and theories related to each other?

a bike can climb the inclined road at uniform speed of 72 km/hr by applying force 500N what will be the power applied by the bike?

According to bohr's theory, how do electrons move around the nucleus

On a very hot summer day, railroad tracks can buckle, causing train delays and derailments. Select the best reason below for the buckling.

How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?