Which of the following is a phase change?

an explosion

mixing paint

a suspension

ice melting

The sphere that refers to Earths water is called the

When an inclined plane is used, A. the mechanical advantage increases as the height increases. B. a smaller force is exerted over a longer distance. C. a negative mechanical advantage can result. D. a greater force is exerted over a shorter distance

why does carrying furniture up four flights of stairs require twice as much work as caring furniture up two flights of stairs

A spring that has a force constant of 1050 N/m is mounted vertically on the ground. A block of mass 1.95 kg is dropped from rest from height of 1.75 m above the free end of the spring. By what distance does the spring compress?

An airplane flies eastward and always accelerates at a constant rate. At one position along its path, it has a velocity of 30.7 m/s. It then flies a further distance of 41300 m, and afterwards, its velocity is 49.1 m/s.

A worker stands still on a roof sloped at an angle of 35° above the horizontal. He is prevented from slipping by static frictional force of 560 N. Find the mass of the worker.

A bowling ball is far from uniform. Lightweight bowling balls are made of a relatively low-density core surrounded by a thin shell with much higher density. A 7.0 lb (3.2 kg) bowling ball has a diameter of 0.216 m; 0.196 m of this is a 1.

Argument changes meaning because of an ambiguous word or phrase. A. equivocation B. fallacy of division C. amphiboly D. fallacy of accent

Is a method used by different animal species for navigation, communication, and finding food.

Which state of matter exist in an extreme high temperature found on stars A) liquid B) gas C) solid D) plasma