1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
motikmotik
3 years ago
6

If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime?

Physics
2 answers:
MakcuM [25]3 years ago
8 0
It seems that you have missed the given options for this question, but anyway, here is the correct answer. If humans cannot see ultraviolet waves, ultraviolet light can be used to gather evidence of a crime since u<span>ltraviolet light causes substances to fluoresce and give off visible light. Hope this is the answer that you are looking for. Thanks for posting!</span>
Naya [18.7K]3 years ago
5 0

Answer:

The anser is Ultraviolet light causes substances to fluoresce and give off visible light. (C)

Explanation:

You might be interested in
Glucose typically enters the cell through which mechanisms
Viktor [21]

Answer:

facilitated diffusion

3 0
3 years ago
Analyze that, “Convection is equal to the Conduction plus fluid flow.”
igomit [66]

Answer:

Convection is equal to the conduction plus fluid flow.

Explanation:

Convection is a mode of heat transfer that requires the movement of the molecules of the medium from one point to another. It takes place majorly in fluids (liquids and gases). While conduction is a process by which heat is transfered by the vibtation of molecules of a medium at their possitions, thereby colliding with other neighbouring molecules to transmit heat.

Before convection could occur, there must be conduction of heat by the molecules of the medium which causes their motion. According to the kinetic molecular theory, any molecule of the medium close to the source of heat conducts heat, becomes less dense and thus moves so that its initial position would be occupied by another denser molecule. This continous process generate convection or convectional current. Therefore, convection is as a result of conduction and fluid flow because a molecule must first conduct heat before it moves.

7 0
3 years ago
What is the Energy Transformation of an electric radiant heater?
bagirrra123 [75]

Answer:

energy transfer electric to heat

8 0
3 years ago
The oil level in a tank is 2 m above the ground. The tank cover is air tight and the air pressure above the oil surface is 150 k
Andrew [12]

Answer:

a) 24.692 m/s

b) 19.4 m

Explanation:

To calculate the velocity at the nozzle outflow (V2) we use the Bernoulli equation:

\frac{P1}{pg}+\frac{V1^2}{2g}+Z1=\frac{P2}{pg}+\frac{V2^2}{2g}+Z2

We know that the velocity above the oil surface (V1) and the pressure at the nozzle outflow (P2) are negligible, the height in the exit is zero (Z2) then:

\frac{P1}{pg}+Z1=\frac{P2}{pg}+\frac{V2^2}{2g}

a) The velocity (V2) is:

\frac{P1}{pg}+Z1=\frac{V2^2}{2g}

(\frac{P1}{pg}+Z1)(2g)=V2^2

V2=[(\frac{P1}{pg}+Z1)(2g)]^{1/2}

Substituting the known values we can get the velocity at the out:

Atmospheric pressure= 101000 Pa

Oil density= 0.88x(Water density)=0.88(1000kg/m3)=880kg/m3

V2=[(\frac{150000Pa+101000 Pa}{(880 kg/m3)(9.81m/s)}+2m)(2(9.81m/s2))]^{1/2}

V2=24.692 m/s

b) To calculate the height we have to apply the Bernoulli equation between the outflow and the maximum height (Z3), so:

\frac{P2}{pg}+\frac{V2^2}{2g}+Z2=\frac{P3}{pg}+\frac{V3^2}{2g}+Z3

We know that the velocity above the stream (V3) and the pressure at the nozzle outflow (P2) are negligible, the pressure at the top of the stream (P3) is the atmospheric pressure, then:

\frac{V2^2}{2g}=\frac{P3}{pg}+Z3

Z3=\frac{V2^2}{2g}-\frac{P3}{pg}

Substituting the known values, the height (Z3) is:

Z3=\frac{(24.692 m/s)^2}{2(9.81 m/s2)}-\frac{101000 Pa}{(9.81 m/s)(880 kg/m3)}

Z3=Maximum Height=19.376=19.4 m

3 0
4 years ago
a filament lamp of resistance 3 ohms is connected to the terminals of a 6 V battery. when the switch is closed, the current in t
vivado [14]

voltage = current * resistance

so

current = voltage/resistance

therefore,

current = 6/3 A = 2 A

6 0
4 years ago
Read 2 more answers
Other questions:
  • A student is experimenting with some insulated copper wire and a power supply. She winds a single layer of the wire on a tube wi
    11·1 answer
  • Velocity must be measured in units of
    10·1 answer
  • Explain why atoms move at different speeds depending on whether they are in liquid or solids
    10·1 answer
  • ANSWER FAST PLEASE. The bottom of a box has a surface area of 25.0 cm 2 . The mass of the box is 34.0 kilograms. Acceleration du
    10·2 answers
  • After driving a portion of the route, the taptap is fully loaded with a total of 27 people including the driver, with an average
    14·1 answer
  • A laser beam strikes a plane's surface with an angle of52.
    11·1 answer
  • Determine the gain in gravitational potential energy when a 4.00 kg rock is raised 18.000 m.
    9·1 answer
  • Characteristics of highly sensitive galvonometer​
    15·1 answer
  • A given wire of resistance 1 ohm
    13·1 answer
  • What is the danger to spacecraft and astronauts from micrometeoroids?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!