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
Neko [114]
3 years ago
11

Which of the following is a characteristic of electromagnetic waves?

Physics
2 answers:
goldfiish [28.3K]3 years ago
7 0
It is C-cannot travel very fast
liubo4ka [24]3 years ago
6 0

Answer:

its C

Explanation:

You might be interested in
Two people, one of mass 85 kg and the other of mass 50 kg, sit in a rowboat of mass 90 kg. With the boat initially at rest, the
sergeinik [125]

Answer:

0.11m

Explanation:

let's assume the boat is of uniform construction

Ignoring friction losses

Also assume the origin is at the end of the boat originally with the heavier person

the center of mass of the whole system will not change relative to the water when the two swap ends

Originally, the center of mass is

85[0] + 90[3.5/2] + 50[3.5] / (85 + 90 + 50) = 1.14m from the origin

after the swap, the center of mass is

50[0] + 90[3.5/2] + 85[3.5] / (85 + 90+ 50) = 1.030m from the origin

The center of mass has shifted

1.14-1.030 = 0.11m

as no external force acted on the system, the center of mass relative to the water will not change. The boat will therefore shift towards the end where the heavier person originally sat

4 0
3 years ago
Starting from rest, a 5.00 kg steel sphere rolls down a frictionless ramp with a height of 4.00 m. What is the sphere's speed wh
elena-14-01-66 [18.8K]

Answer:

8.85437 m/s

Explanation:

m = Mass of sphere = 5 kg

h = Vertical height = 4 m

g = Acceleration due to gravity = 9.80 m/s²

Applying conservation of energy we get

\dfrac{1}{2}mv^2=mgh

\\\Rightarrow v=\sqrt{2gh}

\\\Rightarrow v=\sqrt{2\times 9.8\times 4}

\\\Rightarrow v=8.85437\ m/s

The sphere's speed when it reaches the bottom of the ramp is 8.85437 m/s

8 0
3 years ago
What kind of EM waves are most dangerous to humans​
zhuklara [117]

The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them. Hope this helps! =^-^=

4 0
3 years ago
A robot arm moves so that P travels in a circle about point B, which is not moving. Knowing that P starts from rest, and its spe
algol13

Answer

Acceleration=>10.20mm/s

Explanation

Below in image

4 0
3 years ago
HELP PLEASE I need to finish this asap
ELEN [110]

Answer:

I'm not 100% sure, but I think the answer would be the first one because there's a force pushing the object in every direction, so they would cancel eachother out and make the object stay in the same place.

Explanation:

pls vote brainliest

6 0
2 years ago
Read 2 more answers
Other questions:
  • Calculate the longest wavelength visible to the human eye. express the wavelength in nanometers to three significant figures.
    15·1 answer
  • Which statement is true about the difference between calcium carbonate and calcium oxide?
    12·1 answer
  • What does the ideal gas law allow a scientist to calculate that the other gas laws do not?
    9·2 answers
  • James took two pea plants, placing one in a dark closet and the other on a sunny window sill. Both are located in air-conditione
    11·1 answer
  • The total number of protons and neutrons in the nucleus of an atom
    10·1 answer
  • Is a roller coaster moving downhill is a potential or kinetic energy?
    7·1 answer
  • Work can _____ energy between objects and can cause a change in the form of energy.
    7·1 answer
  • a driver brings a car to a full stop in 2.0 s. if the car was initially traveling at 22 m/s, what is the acceleration?
    9·1 answer
  • A wooden toroidal core with a square cross section has an inner radius of 14 cm and an outer radius of 16 cm. It is wound with o
    9·1 answer
  • What does electrical energy transform into when used by objects in a home?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!