Answer:
The time is 1.8s
Explanation:
The ball droped, will freely fall under gravity.
Hence we use free fall formula to calculate the time by the ball to hit the ground
Where h is the height from which the ball is droped, g is the acceleration due to gravity that acted on the ball, and t is the time taken by the ball to hit the ground.
From the question,
h=16m
Also, let take
By substitution we obtain,
Diving through by 9.8
square root both sides, we obtain
Radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are all types of electromagnetic radiation. Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
A. because I had this question yesterday.
Formulated in the 1980s by Robert Sternberg<span>, the </span>triarchic theory<span> distinguishes three aspects of </span>intelligence<span>: analytic skills, such as the ability to think abstractly and evaluate </span>information<span>; creativity, the ability to invent novel solutions or ideas; and practical skills, which enable one to cope with concrete ...</span>
Use formula for Echo which is Velocity=2(Distance)/time so 343=2(150)/T 343T=300..T=300/343=0.9 seconds
