PHYSICS HIGH SCHOOL

The energy that moving objects have is called ________ energy.a. heat
b. kinetic
c. potential
d. electromagnetic

Answers

Answer 1
Answer: kinetic I think.......

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Only the component of force perpendicular to the direction motion does work. true or false

Answers

No.  Only the component of force parallel
to the direction of motion does work.

Robert is accelerating a cart at the rate of 2.2 meters/second2. If the mass in the cart is doubled, and the net force is also doubled, what is the final acceleration?

Answers

f = ma
double f and m gives
(2f) = (2m)a
notice a is unchanged = 2.2
m/s^2

C)    The Acceleration Is Doubled

What is the mass of 2.5 mol of Ca, which has a molar mass of 40 g/mol?

Answers

Answer:100 g of ca

Explanation:

A material that provides little or no resistance to the flow of electric current is called a(an) A. circuit / B. conductor / C. insulator / D. resistor.

Answers

The correct answer is (b.) conductor. A material that provides little or no resistance to the flow of electric current is called a conductor. A conductor is a known material that is used for a smooth flow of current with any barrier in one or more directions.

The correct answer is B) Conductor

A conductor is a material that allows for the flow of electrical charge (electrical current). This type of material provides little or no resistance to the flow of electric current. This is due to the fact that these type of materials have free electrons which conduct the flow of electrical current in any direction.

Different types of conductors have different resistances. Some types of materials are good conductors whereas some are not so good.

Some common conductors are Copper, gold, silver and aluminium.

An insulator is the an object of type of material which have a strong resistance to the flow of electric current. Some common insulators are glass, wood and plastic.

When you can not see what is taking place, but other senses indicate occurrences. This is called?

Answers

Indirect observation

Which of the following is not a property of water? A) Low density B) Low specific heat C) Low heat of vaporisation D) All of the above

Answers

Answer:

the correct answer is (b) low specific heat
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