Why do different substances have diffrent properties

True or False. If your skin is wet, the body's resistance to electric shocks increases.

A hot-air balloon has a volume of 440 * 10^3 ^3. Calculate the buoyant force that the surrounding cold air exerts on the balloon? Given that the density of the surrounding air is 2.58 kg/^3.

Laser light exhibits much stronger interference effects than light from a flashlight. This is because: laser light has a much shorter wavelength than light from a flashlight. laser light is both coherent and monochromatic.

Exercise should challenge your body and be at a greater intensity than your usual bif daily activity. Discuss

Trucks 1 and 2 are traveling at the same constant velocity but truck 1's energy due to motion is two times less than that of truck 2. This is because Truck 1's mass is:

Ways that charges can be transferred

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is: