A person drives 70 km/h in 1 hour to the east, then 80 km/h for another hour to the east. What

was the average velocity for those 2 hours?

What is the approximate absolute magnitude of riegel

Seja uma carga Q=1.2*10 (-8) C no vácuo, distando 40 cm de um ponto M e 50 cm de um ponto N. Determine os pontencias no ponto M e no ponto N. (Dados K=9*10^9 Nm^2/C)

Which do you think will penetrate farther into a block of lean, x-rays or gamma rays? Explain your reasonings.

A 210W heater is placed in 2kg of water and switched on for 200 seconds. a. How much energy is needed to raise the temperature of 2kg of water by 10C? b. How much energy does the heater supply?

7. Which is the best example of a hypothesis? Water changes into steam if it is boiled. If water is boiled, it will turn into steam. If the temperature of water is increased, then it will change into steam.

Where Pabs is absolute pressurePg, is gauge pressure, and Patm is atmospheric pressure. For example, if your tire gauge reads 34 lb/incz (pounds per square inch), then the absolute pressure is ...

The tip of a triangle is held 12.0 cm above the surface of a flat pool of water. A submerged swimmer in the pool sees the tip of the triangle at what distance above the water? Let the indices of refraction nwater = 1.33 and nair = 1.00.

What is a lever used for?

What did the romans build as a step toward environment management

Accelerations are produced by equal forces or unequal forces?