Which type of substance cannot be separated physically?

an alloy

a mixture

pure

heterogeneous

Uranium is an element that is often used in nuclear power plants. Uranium atoms are very large, and the substance can be dangerous if it is not carefully contained. What is true about all uranium atoms?

The top of the cylinder head is sealed by the A. valve cover. B. oil retainer. C. oil pan. D. front cover.

How far will a runner travel at an average speed of 5m/s for 20 minutes?

Which is true about a surface wave? A:It does not have properties of either transverse or longitudinal waves. B:It has properties of both transverse and longitudinal waves. C:It only has properties of transverse waves.

An astronaut on a strange new planet finds that she can jump up to a height of 72 m before she would fall back down to the surface when her initial speed is 60.0 m/s What is the magnitude of the acceleration due to gravity on the planet

A rocky space object of varying size

Three balls are kicked from the ground level at some angles above horizontal with different initial speeds. All three balls reached in their paths the samemaximum height.

A solar eclipse will occur Group of answer choices 1. at every full Moon. during every new Moon. 2. at full Moon only when the Moon is on the ecliptic. 3. at new Moon only when the Moon is on the ecliptic.

What happens when energy in the molecules of an ice cube when it begins to melt

ll of mass m is thrown vertically upward with an initial speed of v0. It experiences a force of air resistance given by F = - kv, where k is a positive constant. The positive direction for all vector quantities is upward.