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Romashka [77]
3 years ago
4

Eli states that sodium phosphate is a mixture because it is composed of both sodium ions and phosphate ions. Which is the best a

nalysis of Eli's statement?
Physics
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

c. It is incorrect because sodium phosphate is a compound that has a single composition.

Explanation:

As we know that the sodium phosphate i.e.  chemical compounds comprise of atoms that are interconnected with the bonds of the chemicals

Also the pure substance that is made by only and only one atom or element or only one type of molecule i.e. compound that contains definite and constant composition with different properties of chemicals

the pure substances could be distinct in chemical way but not in the physical manner that represents the difference between the mixture and the pure substance

Hence, the correct option is c.

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A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?
iren2701 [21]

Newton's 2nd law:

Fnet = ma

Fnet is the net force acting on an object, m is the object's mass, and a is the acceleration.

The electric force on a charged object is given by

Fe = Eq

Fe is the electric force, E is the electric field at the point where the object is, and q is the object's charge.

We can assume, if the only force acting on the proton and electron is the electric force due to the electric field, that for both particles, Fnet = Fe

Fe = Eq

Eq = ma

a = Eq/m

We will also assume that the electric field acting on the proton and electron are the same. The proton and electron also have the same magnitude of charge (1.6×10⁻¹⁹C). What makes the difference in their acceleration is their masses. A quick Google search will provide the following values:

mass of proton = 1.67×10⁻²⁷kg

mass of electron = 9.11×10⁻³¹kg

The acceleration of an object is inversely proportional to its mass, so the electron will experience a greater acceleration than the proton.

6 0
4 years ago
A 4,350 kg truck traveling east has a momentum of 26,100kg m/s what's the trucks velocity
Angelina_Jolie [31]

Answer:

6 m/s East

Explanation:

Momentum = Mass . Velocity

26100 = 4350. Velocity

Velocity = 6m/s East

4 0
3 years ago
Why should a glass slide and a coverslip be held by the edges?
AleksAgata [21]
THIS IS NOT THE EXACT ANSWER BUT IT MIGHT HELP
The cover slips serves two purposes: (1) it protects the microscope's objective lens from contacting the specimen, and (2) it creates an even thickness (in wet mounts) for viewing.
8 0
3 years ago
Which of the following refers to the ability to do work
valina [46]
The ability to do work is called energy.
3 0
4 years ago
Read 2 more answers
Can anyone define thermostat and list electrical appliances that have a thermostat?
Tresset [83]
A thermostat is a switch that operates itself when the temperature
goes above or below a temperature that the user can set.

-- Before you go to bed, you set the thermostat for 65° .
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the thermostat turns on the furnace, and keeps it running until
the house warms up to 65°.  Then it shuts the furnace off.

-- After breakfast, you set the thermostat for 75°.
If the temperature in the house goes above 75°, during the day, 
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the house cools down to 75°.  Then it shuts the air conditioner off.  

-- On Sunday morning, you put the slow cooker on the kitchen counter,
and you throw in a big roast, a sliced onion, some baby carrots, some
sliced potatoes, some vegetable stock, salt, pepper, garlic, chili powder,
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set the slow cooker to "LOW".  The heater in the slow cooker turns on.
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thermostat in the slow cooker turns off the heater, and keeps it off
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  By dinner time, you have a hot, juicy, scrumptious pot roast, ready
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You're still thinking about it when you go to bed, and your mom gives you
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4 0
3 years ago
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