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
Dovator [93]
3 years ago
14

In fig. 30.11, suppose that and with switch open, switch is left closed until a constant current is established. then is closed

and opened, taking the battery out of the circuit. (a what is the initial current in the resistor, just after is closed and is opened? (b what is the current in the resistor at (c what is the potential difference between points b and c at which point is at a higher potential? (d how long does it take the current to decrease to half its initial value?
Physics
1 answer:
Gnom [1K]3 years ago
3 0
In a particle accelerator a positron (C= +1.6 x 10-19) travels through a perpendicular magnet field with a magnitude of 3.1 x 10-2 T. At what speed must the positron travel in order for it to experience a force of 4.75 x 10-14 N? 28. An alpha particle (2 protons and 2 neutrons) experiences a downward force of 2.9 x 10-14 N while traveling in a magnetic field with a strength of 5.1 x 10-19 T pointing to the north. Find the speed of the particle and the direction it must be traveling in. 29. Find the length of a wire if it experiences a .63N force when it travels through a magnetic field with a strength of 0.85T whilst carrying 5.0 amps of current. 30. A coil with 462 turns of wire, a total resistance of 36Ω , and a cross-sectional area of 0.25 m2 is positioned with its plane perpendicular to the field of a powerful electromagnet. What average current is induced in the coil during the 0.37s that the magnetic field drops from 3.1 T to 0.0 T? 31. A step-up transformer has a potential difference across the primary of 28 V and a potential difference across the secondary of 3.0 × 104 V. There are 28 turns in the primary coil. How many turns are in the secondary? 32. A step-up transformer is used to create a potential difference of 1.6872 × 105 V across the secondary. The potentia
You might be interested in
Please send me solution of the question pls​
ELEN [110]

Answer:

20m

Explanation:

P.E=mgh

2000=10×10×h

2000=100h

Divide both side by 100

2000/100=20

4 0
2 years ago
A 60-watt light bulb has a voltage of 120 volts applied across it and a current of 0.5 amperes flows through the bulb. What is t
Naddik [55]

Answer: 240ohms

Explanation: P=IV

P=60watts

I=0.5A

V=120volts

From ohms law

V=IR

R=V/I

R=120/0.5

R= 240ohms

7 0
3 years ago
ਭਾਰਤ ਵਿੱਚ ਸਭ ਤੋਂ ਵੱਧ ਵਰਖਾ ਕਿੱਥੇ<br>ਹੁੰਦੀ ਹੈ।​
astra-53 [7]

Answer:

I don’t understand:(

3 0
2 years ago
Which type of friction force acts when there is no motion?
rosijanka [135]
Its called static friction.
3 0
3 years ago
A construction crew is paving a road. The crew has already paved 1,000 square feet and can pave at a rate of 300 square feet of
anyanavicka [17]

f(3) represents the number of additional square feet the construction crew has paved after 3 hours, not including the initial paved amount.

Mathematical models are representations of real situations. Models often serve the purpose of prediction and can help to explain and simplify certain mathematical problems.

The model; f(x) = 300x + 1,000 represents the number of additional square feet that can be paved in an hour after 1,000 square feet has already been paved.

From the above we can see that the correct answer is; "900 square feet; f(3) represents the number of additional square feet the construction crew has paved after 3 hours, not including the initial paved amount."

Learn more: brainly.com/question/731147

6 0
2 years ago
Other questions:
  • The acceleration of a cart rolling down a ramp depends on __________.
    15·1 answer
  • In binocular rivalry, you see one image in the left eye and an incompatible image in the right eye. what do you perceive?
    12·1 answer
  • A body with a mass of 2,000 kg is lifted to a height of 15 m within a time of 15 s. Which one of the following statements concer
    5·1 answer
  • How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and
    5·1 answer
  • A square sheet of rubber has sides that are 20 cm long. What is the area of the square of rubber in cm squared?
    9·1 answer
  • A compact car has a mass of 1300 kg . When empty, the car bounces up and down on its springs 1.5 times per second. What is the c
    12·1 answer
  • A height of 6 ft 3 in is equal to _______. (Round to 3 significant digits)
    7·2 answers
  • I really need a hand here!
    10·2 answers
  • You place a drop of blue food coloring in a cup of cold water and another drop of food coloring in a cup of hot water. Which obs
    10·1 answer
  • Define a dipole. Hence, write the expression for calculating the electric moment of a dipole​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!