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
olya-2409 [2.1K]
3 years ago
11

Please help i really need it. this is my physic exam

Physics
2 answers:
erastova [34]3 years ago
7 0
Correct answer is C.
Harlamova29_29 [7]3 years ago
3 0

Answer:

bout=14.4V , b)R2=80

am i right

You might be interested in
A long straight wire has fixed negative charge with a linear charge density of magnitude 4.6 nC/m. The wire is to be enclosed by
Semmy [17]

Answer: -33.3 * 10^9 C/m^2( nC/m^2)

Explanation: In order to solve this problem we have to use the gaussian law, the we have:

Eoutside =0 so teh Q inside==

the Q inside= 4.6 nC/m*L + σ *2*π*b*L where L is the large of the Gaussian surface and b the radius of the shell.

Then we simplify and get

σ= -4.6/(2*π*b)= -33.3 nC/m^2

7 0
2 years ago
1. A rocket is fired vertically from the launch pad with a
zavuch27 [327]

Answer:

Max height= 36000 meters

Total Time = 120 seconds

Explanation:

0 = U - at

U = at

U= 20*60

U= 1200 m/s

MAX altitude would be

(U²Sin²tita)/2g

Max height= 1200² *( SIN90)²/(2*20)

Time of FLIGHT

2 * 1200/20

2400/20

120 sec onds

7 0
3 years ago
What is potential energy?
GenaCL600 [577]

Answer:

energy that is stagnant and cannot be changed

4 0
3 years ago
Read 2 more answers
Which way do the players on the court rotate during a game? What happens if the players serve out of order?
tigry1 [53]

Answer:

Explanation:

on volleyballit's clockwise and What Would Happen If Someone Served Out Of Order? If the wrong player on your team serves because it's not their turn, the point and the possession of the serve will go to your opponents.

5 0
3 years ago
A 20 N force is applied to an object causing it to move 10 m. How much work was done on the object? How much energy was needed t
olga2289 [7]

Answer:

Here, force=20N and displacement=10m

Work=Force×Displacement=20N×10m=200Nm

3 0
3 years ago
Other questions:
  • Which group of types of light is listed in order of increasing frequency? which group of types of light is listed in order of in
    15·1 answer
  • 5. The ends of a 10 cm laser rod, index of refraction = 1.76, has its ends coated for reflectivity of 99.9 % and 90 %. If there
    9·1 answer
  • If the mirror reflection coefficients for a laser resonator of length 5 m are 98.5% and 60%, and there are no losses, determine
    6·2 answers
  • Find what is the ratio of the internal energy of hydrogen UB. To the internal energy of helium UJ for two moles of hydrogen and
    8·1 answer
  • The other name for 'net force' is 'unbalanced force'. What is the name of the force that could be applied to an object that woul
    6·1 answer
  • A car has a mass of 1000 kg and a momentum of 12 000 kg m / s.<br> What is its kinetic energy?
    7·1 answer
  • Which option BEST describes the position of the Sun, the Moon, and Earth during the new moon phase and the MOST LIKELY effect of
    14·1 answer
  • if the intensity of a person's voice is 4.6 x 10^-7 w/m^2 at a distance of 2.0 m, how much sound power does that person generate
    12·1 answer
  • Emotional elevation only occurs in animal kin groups. please select the best answer from the choices provided t f
    12·2 answers
  • 1. Sang Hee rubs a balloon on her hair until, when she holds the balloon several inches from
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!