What instrument use lenses or mirrors to collect and focus light from distant objects?

When a sound wave first enters the auricle, which part of the ear does it travel through on its way to the eardrum? auditory nerve cochlea hammer ear canal

If you can run 100 meters in 20 seconds, what is your speed?

Which method of calculating volume would you use if the object is irregulary shaped?

How much water is produced if 2.5 of h2

Consider a box sitting on the floor. If you applied 275 Newtons of force horizontally to the right and the frictional force was 25 Newtons, What would be the magnitude and direction of the net force?

The revolving nosepiece of a compound microscope is used to: a. move the condenser up or down b. change the objective lens c. adjust the slide to move the object into view d. change eyepiece lenses

The motion of an object undergoing constant acceleration can be modeled by the kinematic equations. One such equation is xf=xi+vit+12at2xf=

Energy transferred as heat occurs between two bodies in thermal contract when they differ in which of the following properties? a) mass b) specific heat c) density d) temperature

When the temperature of water increases from room temperature to 90C the process of heating the water is ... adiabatic exothermic isothermic endothermic all of the above

A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done on the system. what is the change of the internal energy Î'eth of the system?