A 0.25-kg ball sits on the roof of a building that is 10 meters tall. Find the GPE. (Gravity = 9.8 on Earth)

19. When white light is incident on a prism, which one of the resulting color components will have the lowest index of refraction? A. Orange B. Blue C. Yellow D. Green

What is the density of a metal cube (exactly 2 cm on each side that weighs 21.6g?

What is the purpose of using a wedge? A. separates objects B. keeps objects together C. allows you to exert force over a distance

Describe Ohm's law and its limitations;

An angler experiences a glare of light coming from the water's surface. Which type of glasses should she wear to minimize the glare?

A cricketer can throw a ball to a maximum horizontal distance of 100m. How much high above the ground can he throw same ball

What is the relationship between the slope of the position graph of an object and its velocity?

Differeniate between thermal energy and heat

The term that describes the time when the sun's are directly over the equator is:

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and receives a tone Doppler shifted by 200Hz, calculate the speed of the enemy submarine if the speed of sound in salt water