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
xeze [42]
3 years ago
13

Which of these waves cannot travel in a vacuum?

Physics
2 answers:
Nana76 [90]3 years ago
8 0
Sound waves is the right answer i took the test

gayaneshka [121]3 years ago
4 0
Light. The black hole is a vacuum, and not even light can escape it's suction
You might be interested in
How many Joules of potential
s2008m [1.1K]

Answer:

40 j, 80j.

Explanation:

P.E= mgh. G=10 m/s².

For 4m, P.E=1*10*4=40 joules.

For 8m, P.E=1*10*8=80 joules.

4 0
3 years ago
Which of the following occurs with both a cold front and a mountain breeze?
BigorU [14]

Answer:

b warm air rises

Explanation:

5 0
3 years ago
supose you have two wires of equal length made from same material. how is it possible for the wires to have different resistance
Ivenika [448]
I'm not sure but I had this question on a benchmark I think its the density of the wire  you need to  find the density or the mass I'm not sure but i do remember this question 
6 0
2 years ago
An airplane with an airspeed of 120 km/h has a heading of 30 degree east of North in a wind that is blowing toward the east at 6
lesya692 [45]

Answer:

Explanation:

Velocity of plane relative to ground V_pg = ?

Given the velocity in vector form ,

velocity of plane relative to air V_pw = 120 cos30 i + 120sin30j

V_wg = 60 i

V_pg = V_pw +V_wg

= 120 cos30 i + 120sin30j + 60i

= 164 i + 60 j

magnitude

=251 km / h

=

8 0
3 years ago
A square coil ℓ = 2cm on a side with 30 turns rotates in a uniform magnetic field, B~ = B0zˆ = 0.1Tˆz, such that the normal of t
kow [346]

Answer:

a) 1.2*10^{-3}cos(1.25t)

b) 0.49mV

Explanation:

a) The coil rotates periodically with period T. Hence, we can write the variation of the magnetic flux with a sinusoidal function, and with max flux NAB. Thus, we have that:

\Phi_B(t)=NABcos(\omega t)\\\\\omega=\frac{2\pi}{T}=1.25\frac{rad}{s}\\\\A=l^2=(0.02m)^2=4*10^{-4}m^2\\\\B=0.1T\\\\\Phi_B(t)=1.2*10^{-3}cos(1.25 t) W

where we have used the values given by the information of the problem for N B and A.

b)

the emf is given by:

emf=-\frac{d\Phi_B}{dt}=-NBA\omega sin(\omega t)\\\\emf(t=12.5s)=-(30)(0.1T)(4*10^{-4})(1.25\frac{rad}{s})sin(1.25*12.5)=1.49*10^{-4}V=0.49mV

hope this helps!!

5 0
3 years ago
Other questions:
  • Which of the following objects is usually the smallest?
    10·2 answers
  • You have a remote-controlled car that has been programmed to have velocity v⃗ =(−3ti^+2t2j^)m/s, where t is in s. At t = 0 s, th
    5·1 answer
  • Why is ice harder than liquid water?
    15·1 answer
  • What factors in Earth's relationship to the Sun make life on Earth possible?
    9·2 answers
  • How do objects and substances have kinetic energy??<br><br> I need help ASAP!!
    7·1 answer
  • What is the distance of the spaceship from the earth
    11·1 answer
  • What is the part of the steam engine that does the work? A. The flywheel B. The cylinder C. The piston D. The turbine
    8·2 answers
  • The amount of work done to bring an electron (q = −e) from right side of hydrogen nucleus to left side in the k shell is________
    12·1 answer
  • You walk 200m south, then 50m east. What is your displacement?
    5·1 answer
  • A branch falls from a tree How fast is the branch moving after 0 28 seconds
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!