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3 years ago

The strength of gravitational force is affected by the mass of objects and which of the following?

Physics

2 answers:

gizmo_the_mogwai [7]3 years ago

6 0

Answer:

The distance between two objects

Explanation:

Depending on how far away or how close two objects are will affect the gravity.

guajiro [1.7K]3 years ago

6 0

Gravitational force strength depends only on two factors, mass of objects and distance between the objects.

Explanation:

The distance between two objects experiencing the gravitational force are in inverse relationship in proportionality.

That is, when distance between two increases, “strength of gravitational force decreases”, and vice versa. If the one of the mass is doubled, force of gravity also doubles and if it increases, force of gravity also increases.

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At a fabrication plant, a hot metal forging has a mass of 75kg and a specific heat capacity of 430 J/(kg.C°). Toharden it, the f

zzz [600]

Answer:

The initial temperature of the metal is = 938.63 °C

Explanation:

Heat lost by the metal = heat gained by the oil.

c₁m₁(T₁-T₃) = c₂m₂(T₃-T₂)................ equation 1

making T₁ the subject of the equation.

T₁ = [c₂m₂(T₃-T₂) + c₁m₁T₃]/c₁m₁.............. Equation 2

Where c₁ = specific heat capacity of the metal, m₁ = mass of the metal, c₂ = specific heat capacity of oil, m₂ = mass of oil, T₁ = initial temperature of the metal, T₂ = initial temperature of the oil, T₃ = Equilibrium temperature.

Given: c₁ = 430 J/kg.°C, m₁ = 75 kg, c₂ = 2700 J/kg.°C, m₂ = 710 kg, T₂ = 32°C, T₃ = 47 °C

Substituting These values into equation 2,

T₁ = [2700×710×(47-32) + 430×75×47]/(430×75)

T₁ = (28755000+1515750)/32250

T₁ = 30270750/32250

T₁ = 938.63 °C

Thus the initial temperature of the metal is = 938.63 °C

7 0

3 years ago

Does the second law of thermodynamics alter the conservation of energy principle?

S_A_V [24]

I believe the answer to be no.
Because it is fully parallel with the law of Conversation of Energy.
But even so,according to the second law, some, or a even a small amount will be transformed(internal or thermal)

8 0

3 years ago

Violet light of wavelength 400 nm ejects electrons with a maximum kinetic energy of 0.860 eV from sodium metal. What is the bind

Travka [436]

Answer:

Binding Energy = 2.24 eV

Explanation:

First, we need to find the energy of the photon of light:

E = hc/λ

where,

E = Energy of Photon = ?

h = Plank's Constant = 6.626 x 10⁻³⁴ J.s

c = speed of light = 3 x 10⁸ m/s

λ = wavelength of light = 400 nm = 4 x 10⁻⁷ m

Therefore,

E = (6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(4 x 10⁻⁷ m)

E = (4.97 x 10⁻¹⁹ J)(1 eV/1.6 x 10⁻¹⁹ J)

E = 3.1 eV

Now, from Einstein's Photoelectric Equation:

E = Binding Energy + Kinetic Energy

Binding Energy = E - Kinetic Energy

Binding Energy = 3.1 eV - 0.86 eV

Binding Energy = 2.24 eV

4 0

4 years ago

Where weathering of a rock takes place? a. rust b. mountain peak c. horizons d. outer surface

Georgia [21]

Your answer should be d, outer surface. =)

3 0

3 years ago

Read 2 more answers

Ferdinand the frog is hopping from lily pad to lily pad in search of a good fly

loris [4]

Answer: $36.86\°$

Explanation:

According to the described situation we have the following data:

Horizontal distance between lily pads: $d=2.4 m$

Ferdinand's initial velocity: $V_{o}=5 m/s$

Time it takes a jump: $t=0.6 s$

We need to find the angle $\theta$ at which Ferdinand jumps.

In order to do this, we first have to find the horizontal component (or x-component) of this initial velocity. Since we are dealing with parabolic movement, where velocity has x-component and y-component, and in this case we will choose the x-component to find the angle:

$V_{x}=\frac{d}{t}$ (1)