Which of the following is true of friction? A friction makes motion possible on Earth. B. friction has mass and can be held. C. friction is always equal to velocity

Atmospheric pressure at sea level has a value of 100kpa. The density of sea water is 1020kg/m-3. At which depth in the sea would the total pressure be 110kpa?

Which of these will reflect light with the highest frequency? O O O O an orange basketball a blue candle a green ribbon a yellow banana

A dog pulls on it's leash with a 10-N force to the left, but doesn't move. Identify the reaction force.

You buy a 75-W lightbulb in Europe, where electricity is delivered to homes at 240 V. Part A If you use the lightbulb in the United States at 120 V (assume its resistance does not change), how bright will it be relative to 75-W 120-V bulbs

What are 3 subatomic particles of an atom?

A tortoise travel 15 meters west, then another 13 centimeters west. How many total has the tortoise walked?

How does genetic drift affect small populations differently than large populations?

Trace fossils are recognized as evidence of which pre-existing life? plants plants and animals neither plants nor animals animals

A net force of 30 N is applied to an object with a mass of 15 kg. The object accelerates at 2 m/s2. If half the force is applied, what happens to the acceleration?

A 770 n man stands in the middle of a frozen pond of radius 10.0 m. he is unable to get to the other side because of a lack of friction between his shoes and the ice. to overcome this difficulty, he throws his 1.