Sand stone, granite, clay, bricks
The pitch of the sound of the car will appear to be <span>lower than the pitch of the car next to you</span>
Answer:
29 counts per minute (29 cpm)
Explanation:
The half-life of a radioactive isotope is the time needed for the activity of the sample to halve.The half-life of Francium-223 is exactly 22 minutes: this means that its activity after 22 minutes becomes exactly half of its initial value. Since the initial activity of this sample of francium-223 was 58 cpm, the activity after 22 minutes will be

Answer:
light rays reflect off an object ,strike the mirror ,and are reflected into your eyes