The use of oil or grease to lessen friction is called

Answers

Answer 1

Answer: They are called lubricants.

Related Questions

What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second?
A window washer who does not want to change his position will want the forces acting on him to be ____________. a. balancedb. largec. smalld. unbalanced
How do wind turbines pollute their environment?
What is a newton equal to in terms of units of mass and acceleration?
Alisha uses wire to connect a battery, a lightbulb, and a switch, but the bulb does not light up even though the switch is in the closed position. Which might explain the problem?

Two students standing apart in a classroom have a gravitational force of attraction between them of 3.20 x 10-8 N. If one student has a mass of 50.0 kg and the other has a mass of 60.0 kg

Answers

I have a hunch that you want to know the distance
between the students. It's just a hunch.

Here's the formula for the force of gravity between 2 masses:

   Force of gravity = G · m₁ · m₂ / D²

Take the numbers given in the question, write them into the formula,
and solve it for 'D'.

If you just want the answer and don't care to see the work,
then skip to the bottom line now.

To see every step along the way, keep reading:

   ' F '       ' G ' ' m₁ '    ' m₂ '
    3.2 x 10⁻⁸ nt = (6.67 x 10⁻¹¹ nt-m²/kg²) (50 kg) (60 kg) / D²

    3.2 x 10⁻⁸ nt = (6.67 x 10⁻¹¹ x 50 x 60) (nt-m²) / D²

   D² = (6.67 x 10⁻¹¹ x 50 x 60) (nt-m²) / (3.2 x 10⁻⁸ nt)

   D² = 6.253125 m²

   D = √6.253125 m² = 2.5 m (rounded)

Does a negative charge indicates a lack of free electrons in a body.

Answers

No. Electrons are negative, so if a body has negative charge is because it has excess of electrons.

John can travel to atlanta 560 miles in 9 hours what is his velocity

Answers

Answer:

132

Explanation:

List all physical changes.

Answers

Physical changes refer to alterations in the properties or characteristics of matter without changing its chemical composition. Some examples of physical changes include changes in state, size, shape and color.

Changes in state are common physical changes that occur when matter transitions between solid, liquid, or gas phases. This change occurs due to a change intemperature or pressure. For example, water freezing into ice or boiling into steam are examples of changes in state.

Changes in size, shape, and texture occur when matter undergoes physical alterations without any changes in its chemical composition. For instance, cutting a piece of paper into small pieces, hammering a metal sheet to make it thinner, or molding clay into a different shape are all examples of physical changes.

Changes in color are also physical changes. They occur when the light-reflecting properties of a material change due to a physical alteration. For instance, when copper is exposed to air, it turns green due to a chemical reaction, but when iron rusts, it changes color due to a physical change in its surface.

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The ____ states that between 15 and 20 billion years ago, the universe began expanding out of an enormous explosion. A. H-R diagram
B. binary star theory
C. Big Bang theory
D. "big crunch" theory

Answers

In my opinion, the correct answer among the choices listed above is option C. The Big Bang Theory states that between 15 and 20 billion years ago, the universe began expanding out of an enormous explosion. However, the exact number is approximately 13.8 billion years ago.

Answer:

Big Bang theory

Explanation:

The big bang theory describes the beginning of the universe. According this theory, all the matter of the universe was confined at a point and about 15-20 billion years ago, it started expanding out of a huge explosion -the big bang. The universe has been expanding since then. The discovery of cosmic microwave background radiation provides the evidence to this theory.

Thus, the correct option is C.

angie, brad, and carlos are discussing a physics problem in which two identical bullets are fired with equal speeds at equal-mass wood and steel blocks resting on a frictionless table. one bullet bounces off the steel block while the second becomes embedded in the wood block.

Answers

The question didnt fit in the are provided

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