Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground. What is the approximate horizontal component of the initial velocity?

What is the energy of a photon of this light, in ev?

What is the approximate mass of a 200-newton object on earth? A) 20kg B) 100kg C) 200kg D) 1,960kg

What is the study of the cosmos? The study of the cosmos includes what topics?

What makes it possible for us to see the moon from earth? A. Light from earth shines on the moon's surface, making it bright. B. The moon absorbs light during the day and reflects that same light back at night. C.

A loud sound is produced in the downtown section of a city. Which of the following is least likely to occur with sound wave.

Which term describes the second personality seen in a person with dissociative identity disorder (DID) ? A. ego B. superego C. alter ego D. id

What happens to the partiles of a soild as it becomes a liquid

How was the gravitational constant G first determined

There is an explosion on the surface of a lake and two people John and Nil hear its sound. John is 150m away on a boat and Nil is 150m below the surface of water. Who would hear the sound first and why?

It takes 3.3 j of work to stretch a hooke's-law spring 15 cm from its unstressed length. how much the extra work is required to stretch it an additional 11.3 cm? answer in units of j.