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Kazeer [188]
3 years ago
13

Which statements represent properties of intermolecular forces? Select all that apply.

Physics
1 answer:
dangina [55]3 years ago
7 0

Answer:

Two numbers

Explanation:

see it first

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The direction in which heat flows between two bodies depend on their
Alchen [17]

Answer:

b. jury wasn't on ayesha akter

6 0
3 years ago
If the line spectrum of lithium has a red line at 670.8 nm. How much energy does a a photon with this wavelength have?
Colt1911 [192]
We already know the formula for finding the energy of a photon with this wavelength as:
<span>E = ħc / λ
</span>The information's that we already know are:
h = Plancks constant
   = <span>6.626x10^-34 Js
c = light speed
   = </span><span> 2.999x10^8 m/s
</span><span>λ = Wavelength of the light as given in the question
</span>   = <span>670.8x10^-9 m
E = amount of energy
Then
E = (</span>6.626x10^-34) * (2.999x10^8)/ (<span>670.8x10^-9)
    = </span><span>2.962x10^-19 J</span>
5 0
3 years ago
According to the work-energy theorem, the amount of work done can be determined using which formula?
torisob [31]

Answer:

W=\Delta KE= KE_f-KE_i=\frac{1}{2} \,m \,v_f^2-\frac{1}{2} \,m \,v_i^2

Explanation:

The Work-Kinetic Energy Theorem states that the work done on a particle of mass "m", equals the particle's change in Kinetic Energy (final Kinetic Energy of the particle "KE_f" minus the initial Kinetic energy of the particle "KE_i"), and it is expressed as:

W=\Delta KE= KE_f-KE_i=\frac{1}{2} \,m \,v_f^2-\frac{1}{2} \,m \,v_i^2

where we have used the explicit form of the KE of a particle of mass m and velocity v. Of course, v_f stands for the final velocity of the particle, and v_i for the particle's initial velocity.

6 0
3 years ago
A curium-242 (Z= 96) can be produced by positive-ion bombardment when an alpha particle collides with which of the following nuc
meriva

Answer:

A. Pu -239

Explanation:

An isotope is an element with the same atomic number but different mass number. most isotope are unstable, having short half life.

Curium-242 is an isotope produced when Plutonium 239 is bombarded by an alpha particle. This reaction between Plutonium 239 and alpha particle gives curium-242, neutron and a high amount of energy as the products.

Curium oxidizes easily, and it is a dangerous metal which can cause cancer initiation when absorbed by biological materials e.g bones or tissue.

4 0
3 years ago
The electric field of a charge is defined by the force on: An electron A probe charge A proton. A source charge.
Alina [70]

Answer:

A probe charge

Explanation:

As we know that electric field intensity is the force experienced by the probe charge which is placed in the electric field region

Here we can say it as

E = \frac{F}{q}

so here that probe charge should be very small so that it will not disturb the electric field in the space.

If the probe charge is of large magnitude then the field will get disturbed and the intensity which is to be measured is different from its actual value.

Also the sign of the probe charge is taken to be positive.

so correct answer here will be

A probe charge

7 0
3 years ago
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