Why are the sunrise and sunset red?

If a car travels at 50 km per hour, how far will it go in 2.35 hours? (Show your work. Include the units in you answer.

KCl (aq) + AgF (aq) → AgCl (s) + KF (aq) If 0.45 moles of potassium chloride are consumed completely and we start with twice as much silver fluoride, how many moles of solid silver chloride will be produced?

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 222J of energy to the room? Joules

Which of the following best explains velocity? a. the speed of an object in motion b. the speed and direction of an object in motion c. only the change of direction of an object in motion d. the direction of an object in motion

The acceleration of a particle moving only on a horizontal xy plane is given by, where is in meters per second squared and t is in seconds. At t 0, the position vector locates the particle, which then has the velocity vector. At t 4.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)

Do tides depend more on the strength of gravitational pull or on the difference in strengths? explain.

Which of the following scenarios would create the most friction between the two surfaces? A.) a shoe with a rubber sole moving against a smooth tile floor B.) a shoe with a wooden sole moving against a smooth tile floor C.

A ball is dropped from rest from the top of a building. what force is responsible for the downward motion of the ball?