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2 years ago

Which is necessary for visualizing latent stains of blood, semen, or urine at a crime scene

Physics

2 answers:

Ksivusya [100]2 years ago

6 0

Answer: B) ultraviolet light source

Explanation:

An ultraviolet light source is used to locate bodily fluids like semen, sweat, saliva and vaginal fluids at the scene of crime. These fluids emit their own natural fluorescence in the presence of ultraviolet light which are otherwise remain hidden and undetected at the scene of crime by naked eyes. This technique helps in their detection, collection and identification.

Slav-nsk [51]2 years ago

5 0

The correct answer is B) Ultraviolet light source. Hope this helps.

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When a piece of metal mass of 72.17 g is

nordsb [41]

Answer:

Explanation:

The trick is in finding the volume.

Final Volume = 26.64

Initial Volume=<u>20.92</u> Subtract

Metal Volume 5.72 cm^3

Density = mass / volume

Density = 72.17 / 5.72

Density = 12.617

7 0

2 years ago

The temperature inside my refrigerator is about 4 degrees C. If I place a balloon in my fridge that initially has a temperature

maksim [4K]

Convert the given temperatures from celsius to kelvin since we are dealing with gas.

To convert to kelvin, add 273.15 to the temperature in celsius.

T1 = 22 + 273.15 = 295.15 k

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V1 = 0.5 L

Let's find the final volume (V2).

To solve for V2 apply Charles Law formula below:

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

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9 months ago

Where can volcanoes form? A. Where there are cracks in the crust B. Along fault lines C. Where the crust is thin and can be rupt

schepotkina [342]

The answer is all of the above

8 0

3 years ago

Read 2 more answers

Water flows steadily through a pipe of length L and radius R=75mm. The velocity distribution across the outlet is given by u=uma

ruslelena [56]

Answer:

4/3

Explanation:

Shown in the picture attached

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3 years ago

A child, hunting for his favorite wooden horse, is running on the ground around the edge of a stationary merry-go-round. The ang

olga55 [171]

Answer:

9.22 s

Explanation:

One-quarter of a turn away is 1/4 of 2π, or π/2 which is approximately 1.57 rad

Let t (seconds) be the time it takes for the child to catch up with the horse. We would have the following equation of motion for the child and the horse:

For the child: $s_c = \omega_ct = 0.233t$