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sergeinik [125]
4 years ago
9

Which are true for a photon. (Choose 3)

Physics
1 answer:
ser-zykov [4K]4 years ago
4 0
A c and e are correct but b and d are incorrect. i hope this helped
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two identical steel balls mounted on wooden posts initially have different amounts of charge, one with -14uC and the other with
GrogVix [38]

According to the Law of Conservation of Charge, the net charge remains constant. If both things have different charges, upon contact, they would share the charge equally. In this case, the total charge is -16μC. The final charge for each ball would be -8 μC.

7 0
4 years ago
Read 2 more answers
An ideal gas is confined to a container with constant volume. The number of moles is constant. By what factor will the pressure
Andrews [41]

Answer:

1/3

Explanation:

Gay Lusaac's law states that "the pressure of a given mass of gas is directly proportional with the absolute temperature of the gas, provided that the volume is kept constant."

In formula, we say that

P/T = k

Where

P = pressure at different points

T = temperature at different points

k = constant of proportionality

From the stated formula, if we multiply the temperature by 3, we have

P/3T = k

P * 1/3T = k

And from this, we see the pressure will change by a value of 1/3

4 0
3 years ago
The 2-kg collar is attached to a spring that has an un-stretched length of 3.0 m. If the collar is drawn to point B and releases
Bezzdna [24]

Complete Question

The image for this question is shown on the first uploaded image

Answer:

v =  3.4 \ m/s

Explanation:

From the question we are told that

   The mass of the collar is  m =  2 \ kg

    The original length is  L =  3.0 \ m

     The spring constant is  k =  3.0 \ N/m

     

Generally the extension of the spring  is  mathematically evaluated as

        e =  4 -3 =  1 \ m

Now with Pythagoras theorem we can obtain the length from A to B as

        AB  =  \sqrt{5 ^2  + 4^2}

       AB  = 6.4 \ m

The  extension of the spring at B is  

     e_b  =  6.4 -  3 =  3.4 \ m

According to the law of energy conservation

   The energy stored in the spring at point A +  the kinetic energy of the  spring =  The  energy stored on the spring at B

So

     \frac{1}{2}  *  k * e  +  \frac{1}{2}  * m* v^2  =  \frac{1}{2}  *  k * e_b

substituting values

    \frac{1}{2}  *  3 * 1^2  +  \frac{1}{2}  * 2* v^2  =  \frac{1}{2}  *  3 *  3.4^2

=>   v =  3.4 \ m/s

8 0
4 years ago
Relate the buoyant force to increased depth
swat32

Answer:The buoyant force doesn't depend on the overall depth of the object submerged. In other words, as long as the object is fully submerged, bringing it to a deeper and deeper depth will not change the buoyant force. This might seem strange since the pressure gets larger as you descend to deeper depths.:

5 0
4 years ago
When a refrigerant trace gas is necessary in a 410a air conditioner, which of the available refrigerants should be mixed with ni
Tema [17]

The answer is CFC – 22 or HCFC - 22. To locate leaks, it is easily accomplished using a pressure – regulated dry nitrogen charge with CFC – 22. But some technicians prefer to use Refrigerant – 22 (HCFC – 22) to pressurize the system without the use of nitrogen. CFC – 22 is also known as Chlorodifluoromethane. This is a hydrochlorofluorocarbon (HCFC). This is better recognized as HCFC-22, or R-22. It is usually used as a propellant and refrigerant. While HCFC – 22 is also known as class II hydrochlorofluorocarbon refrigerant that is less harmful to the ozone than R -12. If HCFC – 22 is used for leak testing, all refrigerant must be first detached from the system. After the leak test, HCFC – 22 should be remove before putting any other refrigerant. Do not mix refrigerants. Both HCFC – 22 and R -134a fall into the kind of refrigerants known as combustible. If exposed to oxygen, they will burn when under pressure or exposed to high temperatures. 

3 0
3 years ago
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