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
Mandarinka [93]
3 years ago
11

I need help on a homework question.

Physics
2 answers:
Mama L [17]3 years ago
7 0

Answer:

green

Explanation:

the the board is going to be green

Marta_Voda [28]3 years ago
6 0
C. Green I think sorry if I’m wrong
You might be interested in
Which type of matter is likely to absorb the most sound waves? A. Metal door B. Loudspeaker C. Hot air O D. Foam wall​
alina1380 [7]

Answer:

I think D...

Explanation:

6 0
3 years ago
Read 2 more answers
The concrete slab of a basement is 11 m long, 8 m wide, and 0.20 m thick. During the winter, temperatures are nominally 17°C and
mina [271]

Answer:

\frac{dQ}{dt}= 4312 W

Explanation:

As we know that base of the slab is given as

A = 11 \times 8

A = 88 m^2

now we know that rate of heat transfer is given as

\frac{dQ}{dt} = \frac{kA}{x} (T_2 - T_1)

here we know that

k = 1.4 W/m k

Also we have

x =0.20

\frac{dQ}{dt} = \frac{1.4(88)}{0.20}(17 - 10)

\frac{dQ}{dt}= 4312 W

7 0
3 years ago
Calculate the minimum frequency of ultrasound (in Hz) that will allow you to see details as small as 0.193 mm in human tissue. (
STatiana [176]

Answer:

f = 7.97 x 10⁶ Hz = 7.97 MHz

Explanation:

The speed of a wave is given by the following formula:

v = f\lambda

where,

v = speed of the ultrasound wave through human tissue = 1540 m/s

f = frequency of ultrasound wave required = ?

λ = wavelength of ultrasound waves = smallest detail required = 0.193 mm

λ = 0.193 mm = 1.93 x 10⁻⁴ m

Therefore,

1540\ m/s = f(1.93\ x\ 10^{-4}\ m)\\f = \frac{1540\ m/s}{1.93\ x\ 10^{-4}\ m}

<u>f = 7.97 x 10⁶ Hz = 7.97 MHz</u>

8 0
3 years ago
HELP I WILL GIVE BRAINLYEST!!
zavuch27 [327]

Answer:

A-B-C

Explanation:

Depends if you have good taste.

8 0
3 years ago
Identify the physical property of a material that is NOT a good conductor of heat.
EleoNora [17]

Answer:D.no of the above

Explanation:get right with Christ

4 0
3 years ago
Other questions:
  • An aircraft, traveling northward, lands on a runway with a speed of 77 m/s. Once it touches down, it slows to 6.3 m/s over 705 m
    12·1 answer
  • Please need on this last one
    10·2 answers
  • Calculate the energy in kilowatt hours used by a heater that operates continuously for 30 minutes. The heater has a power rating
    7·1 answer
  • A crate of mass 10.0 kg is pulled up a roughincline with an initial speed of 1.50m/s. The pulling forceis 100N parallel to the i
    8·1 answer
  • What happens to volume if pressure and temperature are doubled?
    6·1 answer
  • The image below shows a photo taken with a built-in lens of a digital camera. The bottom photo is taken with the same camera, bu
    11·1 answer
  • What is true of all places on earth during the equinoxes
    12·2 answers
  • Microwaves have a _________wavelength and _________frequency than radio waves.
    12·2 answers
  • this is an area where two tectonic plates move towards each other with one going under the other plate?
    11·1 answer
  • A box with a mass of 20 kilograms is sliding down a ramp tilted at an angle θ of 30° to the horizontal. Determine the accelerati
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!