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3 years ago

Increasing your workload a little bit is called?

Physics

1 answer:

kozerog [31]3 years ago

7 0

A. Progression

happening or developing gradually or in stages; proceeding step by step.

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1 kg of aluminum requires 887 J (Joule) to raise its temperature by 1 K (Kelvin). The specific heat of aluminum is expressed as

zavuch27 [327]

Answer:

887 J

Explanation:

the specific heat of a material is defined as the amount of heat energy required to raise the temperature of the substance by 1 K of mass 1 kg. So, the specific heat of the aluminium, c = 887 J/kg K

mass of aluminium, m = 100 g = 0.1 kg

T1 = - 9° C

T2 = 1° C

ΔT = 1 + 9 = 10° C

The amount of heat required

H = m x c x ΔT

H = 0.1 x 887 x 10 = 887 J

3 0

3 years ago

A sample of gold has a volume of 2 cm3 and a mass of 38.6 grams. What would be the density, and three other properties of the sa

lukranit [14]

The density of the gold is calculated to be "19,300 kg/m³".

<u>Explanation:</u>

Given:

Volume = 2cm³

Mass = 38.6 grams.

To Find:

Density of the gold = ?

Solution:

Density is obtained by dividing mass of the sample by its volume and it is given in the units of kg/m³.

Mass in grams is converted into kg as,

1 g = 0.001 kg

38. 6 g = $\frac{38.6}{1000} = 0.0386 kg$

Now we have to convert cm³ to m³ as,

1 cm³ = 10⁻⁶ m³

2 cm³ = 2 × 10⁻⁶ m³

So Density = $\frac{0.0386 k g}{2 \times 10^{-6} m^{3}}=19,300 \mathrm{kg} / \mathrm{m}^{3}$

Physical properties of Gold:

Gold is a heavy metal.

It is Malleable and ductile.

It is a corrosion resistant element.

3 0

3 years ago

An 80-N crate is pushed at constant speed for a distance of 5.0 m upward along a smooth inclined plane that makes an angle of 30

Mice21 [21]

The work done by the pushing force is 200 J; option B.

<h3>What is work done in an inclined plane?</h3>

The work done in an inclined plane is given by the formula below:

Work done = Force * distance

Force, F = mgsinθ + ma

where a = 0

Work done = 80 * 5 * sin 30°

Work done = 200 J

In conclusion, work done is the product of force and distance.

Learn more about work done at: brainly.com/question/10712853

#SPJ1

4 0

2 years ago

The 2-Mg truck is traveling at 15 m/s when the brakes on all its wheels are applied, causing it to skid for 10 m before coming t

Scorpion4ik [409]

Answer:

constant horizontal force developed in the coupling C = 11.25KN

the friction force developed between the tires of the truck and the road during this time is 33.75KN

Explanation:

See attached file

8 0

3 years ago

2. A car is moving south. It is getting faster. In which direction is the acceleration?

notka56 [123]

South it is the same direction the car is already moving

7 0

3 years ago