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
mote1985 [20]
2 years ago
7

Through which material does the light travel the fastest?

Physics
1 answer:
eimsori [14]2 years ago
6 0
The answer is A because it gives you a straight line which would make it easy for you go just go to end fast as a car .
You might be interested in
A man has a power of 90 W and mass 60 kg runs up a staircase in 40 s. If each staircase is 20cm high find the number of steps? (
Svetlanka [38]
I depends on three area of the staircase
4 0
2 years ago
"A uniform cylinder of mass M and radius R is rolling without slipping. The velocity of its center of mass is v. What is the cyl
Goshia [24]

Answer:

Explanation:

Given

mass of cylinder is M

radius R

velocity of center of mass is v

As there is no slipping therefore cylinder will rotate as well as translate

Moment of inertia of cylinder I=\frac{MR^2}{2}

Kinetic Energy of cylinder K.E.=\frac{1}{2}Mv^2

Rotational energy R.E.=\frac{1}{2}I\omega ^2

for rolling

v=\omega \times r

where \omega =angular\ velocity\ of\ cylinder

R.E.=\frac{1}{2}\times \frac{MR^2}{2}\times (\frac{v}{R})^2=\frac{1}{4}Mv^2

Total kinetic Energy =\frac{1}{2}Mv^2+\frac{1}{4}Mv^2=\frac{3}{4}Mv^2

6 0
2 years ago
900n pushes a wedge 0.10 m into a log, if the work done on the log is 50j what is the efficiency of the wedge
mariarad [96]

Answer:

100

Explanation:

mark me brainliest

7 0
3 years ago
Https://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html
Katarina [22]

Answer:

there is not pic

Explanation:

5 0
2 years ago
Which objects will likely have the smallest gravitational force between them?
lora16 [44]
I’d say two soccer balls that are touching each other, I hope that helps!
8 0
3 years ago
Other questions:
  • What is the potential difference across a 15 Ω resistor that has a current of 3.0 A?
    9·2 answers
  • Your clothing tends to cling together after going through the dryer. Why? Would you expect more or less clinging if all your clo
    5·1 answer
  • Which of the following expressions is equivalent to the expression
    15·1 answer
  • An internal combustion engine has an efficiency of 22.3%. This engine is used to deliver 6.25x 40 J of work to drive the motion
    5·1 answer
  • The landing of a spacecraft is cushioned with the help of airbags. During its landing on Mars, the velocity of downward fall is
    8·2 answers
  • Climates are defined by temperature and precipitation. Please select the best answer from the choices provided T F
    6·2 answers
  • Ball's velocity be in a year? Assume there are no nearby planets.
    7·1 answer
  • Two sound waves of equal amplitude interfere so that the compression of one wave falls on the rarefaction of the other.Which sta
    5·2 answers
  • Pls help! Tysm!!! :D
    13·1 answer
  • Why does a bowling ball and a father fall at the same speed while in a vacuum? <br> PLZ NEED HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!