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Debora [2.8K]
3 years ago
13

The amount of heat an object can give off depends on _________.

Physics
2 answers:
jekas [21]3 years ago
8 0
The correct answer is It’s temperature and how big it is
FrozenT [24]3 years ago
6 0

Explanation:

it's temp and how big it is

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You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 27.2
garri49 [273]

Answer:

c=326.5177 J/kg.K

Specific heat is c=326.5177 J/kg.K

Explanation:

In order ti find the specific heat, we will proceed as follow:

Formula we are going to use is:

Q=m*c*\Delta T

Where:

Q is the heat energy added

m is the mass of sample

c is the specific heat

\Delta T is the temperature Rise.

First we will find the mass:

Weight=m*g  (g is gravitational acceleration=9.8 m/s^2)

m=\frac{weight}{g} \\m=\frac{27.2}{9.8} \\m=2.7755 \ kg

Rearranging above formula:

c=\frac{Q}{m* \Delta T}

c=\frac{1.45*10^4}{2.7755*16}

c=326.5177 J/kg.K

Specific heat is c=326.5177 J/kg.K

5 0
3 years ago
Which best describes the differences between a resume and a CV?
son4ous [18]

Answer:

The resume will be tailored to each position whereas the CV will stay put and any changes will be in the cover letter. ... I would say the main difference between a resume and a CV is that a CV is intended to be a full record of your career history and a resume is a brief, targeted list of skills and achievements

Explanation:

8 0
3 years ago
Technician A says that liquid cooling an engine helps to maintain a consistent operating temperature. Technician B says that oil
belka [17]

Answer:

A. Technician A

Explanation:

As we know that ,engine generate a huge amount of energy in the inside the combustion cylinder .Only some amount of energy is used for the power consumption and remaining energy rejected to the surrounding ,That is why it become very important to provide proper cooling for the engine cylinder.By maintaining the proper cooling the engine cylinder can save from the high thermal stresses.

Generally water is used for the cooling for large size engine like truck ,bus tractor etc but for the small size engine ,air is used to for cooling of the engine.

That is why only technician A is correct.

7 0
3 years ago
What causes materials to have magnetic fields?
Natasha_Volkova [10]

Answer:

Magnetism is caused by the motion of electric charges.

5 0
4 years ago
A small aircraft, on a heading of 225°, is cruising at 150 km/h. It is encountering a wind blowing from a bearing of 315° at 35
ki77a [65]

As we can see in the figure attached here

The velocity of aircraft is given as

v_p = 150 km/h at 225 degree

velocity of wind is given as

v_a = 35 km/h at 315 degree

so here the net velocity of aircraft will be the vector sum of aircraft speed and wind speed

since in the figure we can see that the two speeds are perpendicular to each other

so we can say that the resultant of two speed can be given by using Pythagoras theorem

so we will have

v_{net} = \sqrt{v_a^2 + v_p^2}

v_{net} = \sqrt{150^2 + 35^2}

v_{net} = 154 km/h

so net speed of aircraft will be 154 km/h

6 0
3 years ago
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