What is heavier a pound of lead or a pound of photons?

The average human body contains approximately 5 liters of blood. If the blood has a density of 1060 kg/m^3, what is the total mass of blood in the average human? (Note: 1 L = 1000 cm3.) A) 0.212 kg B) 0.530 kg C) 5.30 kg D) 10.6 kg

Calculate the total displacement of a mouse walking along a ruler, if it begins at the x=5cm, and then does the following: It walks to x=12cm It then walks a displacement of - 8cm Lastly, it walks to the location x=7cm

A crime suspect fled the scene when police officers entered the building. How far could he run in 10 minutes if he can run 5 miles per hour?

What was the goal of the Cassini-Huygens mission? A. explore Jupiter B. explore Venus C. explore Mars D. explore Saturn

An automobile battery has an emf of 12.6 V and an internal resistance of 0.0790 Ω. The headlights together have an equivalent resistance of 4.00 Ω (assumed constant).

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.

Vf=vi+at solve for t

A solenoid is formed by winding 23.0 m of insulated silver (resistivity 1.59 * 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping, and the insulating coat on the wire is negligibly thin.

How would you describe the two projectors used to screen a three-dimensional movie? A. Both projectors have vertical polarizers. B. One projector has a vertical polarizer and the other has a horizontal polarizer. C.

A roller coaster has a mass of 500 kg. It drops from rest at the top of a hill that's 57 m tall. How fast is it going when it reaches the bottom? Acceleration due to gravity is g = 9.8 m/s2.