Which of the following terms is associated with spins in tennis?

a. top only

b. slice only

c. back only

d. top and back

Semi-conductors are materials that A) are good conductors. B) allow electron flow and resist neutron flow. c) have insulator and conductor properties. d) allow neutron flow. Semi-conductors are materials that have insulator and conductor properties.

The temperature of the atmosphere increases with increasing altitude in the

The gauge pressure in your car tires is 2.20 x 10^5 N/m^2 at a temperature of 35.0°C when you drive it onto a ferry boat to Alaska. What is their gauge pressure (in atm) later, when their temperature has dropped to - 38.

Select all that apply. There is no sound in the vacuum of space. Why? Sound must travel through something that vibrates. There is no energy in space. There is no air to vibrate the human eardrum. Space is too full of light energy.

The international governing body for badminton is the

How many earth years does it take mars to orbit the sun

Which represents a system that is almost completely closed?

If many household substances classify as acids or bases what is the ph scale

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are