PHYSICS MIDDLE SCHOOL

Is a aluminum pie plate an element

Answers

Answer 1
Answer:
Aluminum is an element.  It doesn't matter what you do with it.

Related Questions

What happens in a change in temperature as it is heated
Which can cause blockage of the ear canal, leading to hearing loss? aging disease earwax noise
Compare relative age with absolute age.
What will happen to the brightness of the lamp when the the slider is moved towards x
Please help pleease1)Jeremy wants to buy some snacks. He walks four blocks east and two blocks south to get to the closest convience store to his house. How far away is store from his house, directly? 2)A slanted vector has a magnitude of 41 N and is at an angle of 23 degrees north of east. What are the magnitude and direction of the horizontal and vertical components of this vector? 3)A horizontal component vector has a magnitude of 11 m. If the resultant vector forms and angle with this component of 19 degrees, what is the magnitude of the resultant vector?

Why do scientists think Mars once had liquid water on the surface?Please help!!!!!!!!!!!!!!!!!

(Homework due tomorrow!!!)

Answers

scientists this this as mars contains polar ice caps
and so that ice must have come from somewhere 

Question 2How do an ionic bond and a covalent bond differ?


A. An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.


B. A covalent bond is an attraction between oppositely charged ions. An ionic bond is a sharing of electrons between atoms.


C. There is no difference. Both an ionic bond and a covalent bond share electrons.


D. There is no difference. Both an ionic bond and a covalent bond are attractions between oppositely charged ions.


Question 3

What is a bond between a positive and a negative ion called?


A. covalent bond


B. ionic bond


C. metallic bond


D. polar bond


Question 4

Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2). Why do these substances have different properties?


A.The atoms are arranged differently in each molecule.


B. The molecules are the same.


C. The atoms are the same.


D.Water has more atoms than hydrogen peroxide.


Question 5

What is the definition of a chemical bond?


A. a mutual attraction between the nuclei and electrons in two different atoms


B. a mutual attraction between the nuclei and electrons in a single atom


C. a mutual repulsion between the nuclei and electrons in two different atoms


D. a mutual repulsion between the nuclei and electrons in a single atom

Answers

2.(A)These two opposite ions attract each other and form the ionic bond.Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electronsbetween atoms and other covalent bonds

A circuit has a known resistance of 5 Ohms. An ammeter in the circuit gives a reading of 5 Amps. What is the Voltage of the circuit?

Answers

E = I R

Voltage = (current)×(resistance).

V = 5A x 5 ohms = 25 volts.

Question 3 A compound is the chemical bonding of _____. a two or more solutions b two or more mixtures c two or more elements
Question 4 Which item is a mixture? a copper b table salt c carbon d air Question 5
A sample of matter that contains only one kind of atom would be classified as _____. a a homogeneous mixture b an element c a heterogeneous mixture d a compound
Question 6
Which action will make a solid solute dissolve more slowly in a liquid solvent? a decreasing the solvent’s temperature b stirring the solution c crushing the solute into small pieces Question 7
A chemical change is required to separate the components of a _____. a heterogeneous mixture b compound c homogeneous mixture Question 8
Solutions and heterogeneous mixtures have _____. a parts that are chemically bonded to one another b parts that are physically mixed c individual parts that can be seen without a microscope
Question 9
Matter that is always composed of the same combination of atoms is a _____. a solution b substance c mixture Question 10
Adding more solute to a solution changes the _____. a polarity of the solute molecules b solubility of the solute c concentration of the solution
Question 11
Saturated is a term that is used to describe _____. a polarity b pH. c solubility d concentration Question 12
Evaporation, a physical change, could be used to separate the components of a(n) _____. a substance b mixture c element d compound
Question 13
Which phrase describes the parts of a solution but NOT the parts of a heterogeneous mixture? a evenly mixed b easily visible with the unaided eye c always a single type of atom d chemically bonded Question 14
Which item could be separated into its component parts only by using a chemical change? a granite b air c table salt d salt water

Answers

A. B. D. C. D, A, A, C, B, B, D, D

A body of mass 20kg is set in motion by two forces 3N and 4N acting at right angles to each other, determine the magnitude of the acceleration​

Answers

The required magnitude of the acceleration of the body is 0.25 m/s².

The change of velocity with respect to time concerning the application of some net external force is known as acceleration.

Given data:

The mass of the body is m = 20 kg.

The magnitude of forces at right angles are, 3 N and 4 N.

Now the net external force for the given magnitude of forces is calculated as,

F_(net) = \sqrt{3^(2)+4^(2)}\n\nF_(net)=5 \;\rm N

Now applying Newton's Second law of motion to obtain the value of acceleration as,

F_(net)=m * a

Solving as,

 5 =20 * a\n\na= 0.25 \;\rm m/s^(2)

Thus, we can conclude that the required magnitude of the acceleration of the body is 0.25 m/s².

Learn more about the acceleration here:

brainly.com/question/2437624

Answer:0.25 meter per second square

Explanation:

Resultant force =√(4×4+3×3)

Resultant force=√(25)

Resultant force =5 Newton

But acceleration= force÷mass

Acceleration=5÷20

Acceleration=0.25

What changes to landforms are caused by movements at transform boudaries

Answers

not much changes, but there are some great pressure so some hills may form. 
Other Questions
What would be the necessary to use the accelerometer to measure in the units of m/s2
What is average kinetic energy
Water vapor is cooled in which of the following processes? A. TurbulenceB. ConvectionC. Precipitation D. Wind storms I believe it’s C but I’m not sure .
Help me pleaseee...A 200kg piano sitting on a platform 2 m high has 3920 J off potential energy. It required 4500 J of work to push the piano up a ramp to the platform. What is the best explanation for the difference between the amount of work required to move the piano and its potential energy? A) the piano lost mass as it was pushed up the ramp.B) energy was destroyed moving the piano up the ramp.C) some of the energy required to push the piano up the ramp was used to overcome friction between the piano and the ramp.D) the work required to push the piano up a ramp is greater because the force is the same as if it were lifted, but the distance is greater when using a ramp.