Q:
# What is frictional force?

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### Quick Answer

**Frictional force is the force created by two surfaces contacting and sliding against each other.** There several different forms of frictional forces, such as dry friction and fluid friction.

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Frictional forces are affected by the texture of the surfaces and the amount of force pushing them together. The angle and position of the objects affects the amount of frictional force. If an object is sitting flat against an object, then the frictional force is equal to the object's weight. If the object is pushed against the surface, the frictional force is increased and becomes greater than the object's weight. Objects pulled away from the surface and those at an incline with the surface have less frictional resistance.

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Q:
## What is an upwarped mountain?

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Full Answer >**An upwarped mountain is a mountain formed from force created by heat or magma pushing up directly under the Earth's crust.**The force lifts the layers of rock in the Earth's crust above ground level.Filed Under: -
Q:
## What is a cumulative binomial table?

A:A cumulative binomial table is used in statistics to calculate the probability that the value of a random variable falls within a specific range. Often used to solve binomial distribution problems, cumulative binomial tables usually refer to the probability that the value of the random variable is less than or equal to a specified value.

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Q:
## Why do some shapes tessellate and others not?

A:Tessellations occur when a shape is repeated in an interlocking pattern that fully covers a flat surface, or plane, like the pieces of a puzzle. Some shapes cannot tessellate because they are not regular polygons or do not contain vertices (corner points). They therefore cannot be arranged on a plane without overlapping or leaving some space uncovered. Due to its rounded edges and lack of vertices, the circle is normally not tessellated.

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Q:
## Can a triangle have two acute angles?

A:

Full Answer >**A triangle can have two acute angles.**Some examples of triangle types that have two acute angles are a right triangle and an isosceles right triangle.Filed Under: