1. A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What will the

angle of refraction be?

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.