Questions in Grade High-school

Questions in Grade High-school

[Done] Why don't the present shapes of the continents fit perfectly into a supercontinent?

[Done] What is the plural form of "massie"?

[Done] Explain how an atom is composed of charged particles yet can have an overall charge of zero.

[Done] The length of a rectangle is 12 cm more than the width. The perimeter is 44 cm. Find the length and the width. Find the area of the rectangle in cm².

[Done] Yiska has 56 photographs left to scan. If she can scan 6 photographs per minute, in how many minutes will she have fewer than 20 photographs left to scan?

[Done] The different climates and geography of each colonial region most directly affected: A. Tourism B. Morals C. Agriculture D. Manufacturing

[Done] A cold wave hit Chicago when the temperature was 62°F. During the cold wave, the temperature dropped 2 degrees every hour. How many hours did it take for the temperature to fall below 40°F?

[Done] 1. I drop a penny from the top of the tower at the front of Fort Collins High School and it takes 1.85 seconds to hit the ground. Calculate the velocity in m/s after 1.10 seconds of freefall. Calculate the velocity at impact in mi/hr.

[Done] Engineers who design battery-operated devices such as cell phones and MP3 players try to make them as efficient as possible. An engineer tests a cell phone and finds that the batteries supply 10,000 J of energy to produce 5,500 J of output energy in the form of sound and light for the screen. How efficient is the phone?

[Done] When Europeans first began to explore Africa, what did they find? A. A great diversity of cultures B. A single language shared by all Africans