Why does cupping your hand around your ear improve your hearing?

An object has an initial velocity of 15 m/s. How long must it accelerate at a constant rate of 3 m/s before its final velocity is equal to twice its initial velocity?

Scientists now think high-fructose corn syrup may disrupt appetite control, making people more often o sleep get angry Ceat fast

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. each barrel contains 42 gallons. if the oil film on the ocean is 2.5 * 102 nm thick, how many square meters will the oil slick cover?

A soccer ball is traveling at a velocity of 50 m/s The kinetic energy of the ball is 500 J What is the mass of the secer bort?

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars

Describe how the competition between invasive and native species might affect a food web

Which vector should be negative? any vector whose magnitude is less than 1 a displacement in the direction North any vector whose magnitude is greater than 1 the velocity of a falling object

Acceleration is a scalar quantity true or false

Find a numerical value for rhoearth, the average density of the earth in kilograms per cubic meter. Use 6378km for the radius of the earth, G=6.67*10-11m3 / (kg⋅s2), and a value of g at the surface of 9.80m/s2.

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.