Which of the following is a source of direct electric current?
a. transformer
b. coulomb
c. switch
d. battery

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters