What can only an experiment prove

Consider two wires made of copper. They have the same diameter but one of them has three times the length of the other. Choose the correct statement: a. Both wires have the same resistivity b.

About working of geyser and prepare a report

The total atmospheric pressure on mars is about 150 times less than that of earth. the total air pressure of mars' atmosphere is 0.675 kpa. determine the partial pressure of argon on mars if the rest is composed of 0.013 kpa n2, 0.009 kpa o2, 0.

Simple machines are designed to increase A) gravity B) friction C) force D) mechanical advantage

38^1 centimetre in mm

Does the ear drum vibrates when struck by sound waves and directly sends a message to the brain that is then recognized as sound?

Think of an example that you could use to convice a friend that an object at rest has an "internal hold back property" that is different from a frictional force or the force of the earth's gravity.

Sally places a jar with some pennies into a pool of water and exactly half of the jar is submerged. The volume of the jar is 200 cm3 and the density of the water is 1 g/cm3. a. What is the buoyant force acting on the jar? b.

According to the law of reflection the angle of incidence is equal to the angle of blank

Sound travels 2146 m through a material in 1.4 seconds. What is the material?