Strzała o masie 20g tuz po wystrzale ma prędkość 50m/s. Oblicz pracę wykonana przez zawodniczkę. Ile wynosi energia potencjalna sprężystości napiętej cięciwy?

Dominic has a block made of wood, Jesse has a block of the same volume made of stone. If they are both left in the sun for the same length of time, which one will feel hotter when touched?

Who developed formal logic

What are the conditions to increase the stability of a body?

Sound waves are created by which of the following: A.) Vibrations of particles in the air B.) Vibrations in your vocal cords C.) Vibrations of musical instruments D.) All of the above

Which of the following choices best describes an object's velocity? Question 1 options: a. The bus traveled at 50 mph for 20 minutes. b. The airplane traveled southwest at 280 mph. c. The car went from 35 mph to 45 mph. d.

What is a planetary nebula? a. leftover gas from a supernova explosion b. the ejected envelope of a giant star surrounding the remnant of a star c. a type of young, medium-mass star d. a planet surrounded by a glowing shell of gas e.

A train is moving 4.82 m/s when it begins to accelerate. After 24.8s it is moving 7.09m/s how far did it move in that time

List three different emotions?

The jet stream flows from east to west across the United States. True False

You are in a hot air balloon, 350 m above the flat Texas plains. You look out toward the horizon. How far out can you see--that is, how far is your horizon? The Earth's radius is about 6400 km.