The brightness of a star is determined

A) only by its distance from earth

B) only by its size

C) by both is size and distance from earth

D) by its location in the night star

What force besides gravity would act on something that had been thrown in the air

An artillery shell is fired at an angle of 56.1 degrees above the horizontal ground with an initial speed of 1660 m/s. The acceleration of gravity is 9.8 m/s^2. Find its horizontal range, neglecting air resistance. Answer in units of km.

Suppose that a wave forms in shallow water. The depth of the water d (in feet) and the velocity of the wave v (in feet per second) are related by the equation v = sqrt 32d. If a wave forms in water with a depth of 8.5 feet, what is its velocity?

What is the frequency of ultraviolet light?

What is the sequence of energy transformations associated with a hydroelectric dam? electrical energy into mechanical energy into kinetic energy into gravitational potential energy gravitational potential energy into kinetic energy into mechanical

Kaylie is describing the physical properties of an orange and a lemon. which two physical properties can she determine without using any measurement instruments

What is an example of a third class lever and why use it? A) pulley; changes direction B) baseball bat; increases velocity Eliminate C) car jack; increases the weight it can lift D) wheel barrow; makes it easier to move a load

1. The horizontal and vertical components of a projectile's velocity are a. directly proportional C. independent of each other b. inversely proportional d. equal

Which features involve compression? Select the three correct answers. A. Reverse faults B. Anticlines C. Folded mountains D. Normal faults E. Monoclines

You place a cup of 210 degrees F coffee on a table in a room that is 68 degrees F, and 10 minutes later, it is 200 degrees F. Approximately how long will it be before the coffee is 180 degrees F? Use Newton's law of cooling: