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3 years ago

All objects ____ energy A) conduct B) insulate C) radiate D) eliminate

Physics

2 answers:

rodikova [14]3 years ago

7 0

Answer:

Option (C) is correct.

Explanation:

Every object radiate energy above the absolute zero temperature.

So, as we say all objects, the objects having temperature more than the absolute zero degree, that means the temperature of the object is more than zero Kelvin. So, it radiates energy.

solong [7]3 years ago

6 0

I'm pretty sure the answer is C

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The ability to transfer energy explosively into force is _____.

Paraphin [41]

<span>The rate at which energy is transferred is called "power."</span>

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3 years ago

Read 2 more answers

Select the correct answer

Elenna [48]

Answer:

velocity and wavelength

Explanation:

When a ray of light moves from one medium to another, the ray of light changes the direction when it enters the second medium, refraction of light occurs.

When it changes the direction, the frequency will remain the same because it depends only on the source not on the medium.

As the refractive index of two medium is not same, it means the wavelength will change.

Also, speed = frequency × wavelength

So, wavelength and velocity changes. Hence, the correct option is (a).

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3 years ago

You are playing ice hockey with friends on a frozen pond. The hockey puck (mass 0.2 kg) is sliding on the ice at 10 m/s when it

chubhunter [2.5K]

Answer:

The mass of the hailstone is $m_2 = 0.05$

Explanation:

From the question we are told that

The mass of the hockey puck is $m_1 = 0.2 \ kg$

The initial speed of the puck is $u_1 = 10 \ m/s$

The final speed of the puck is $v_f = 8 \ m/s$

According to the principles of linear momentum

$m_1u_1 + m_2u_2 = (m_1 + m_2)v_f$

At initial the velocity of the hailstone was zero so

$u_2 = 0 \ m/s$

$m_1 u_1 = (m_1 + m_2 )v_f$

substituting values

$0.2 * 10 = (0.2 + m_2 )* 8$

=> $2 = (0.2 + m_2 )* 8$

=> $0.25 = 0.2 + m_2$

=> $m_2 = 0.05$

6 0

3 years ago

Given a force of 75 N and an acceleration of 3 m/s?, what is the mass?

Rashid [163]

Answer:

25 Kg

Explanation:

M=F/A

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3 years ago

_____________(kinetic energy released in matter) specifies the intensity of x-rays at a given point in air at a known distance f

Natali [406]

Answer:

Air kerma

Explanation:

The acronym for the word 'kerma' is $\text{"kinetic energy released per unit mass"}$ . It is the sum or the total of the kinetic energies of the $\text{charged particles}$ that is liberated by the uncharged ionizing radiation in the small sample of a matter, and is divided by the mass of that sample.

It is sometimes used for expressing the radiation concentration that is delivered to a point.

It is used to specify the intensity of the x-rays for any given point in the air at some known distance form the local spot. The total air kerma can be monitored in the fluoroscopic procedure.

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3 years ago