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
natka813 [3]
3 years ago
15

a resistance of 30 ohms is placed in a circuit with 90 volt battery what current flow in the circuit​

Physics
1 answer:
mamaluj [8]3 years ago
4 0

Answer:

3amps

Explanation:

voltage v = current I × resistance R

current = voltage÷ resistance = 90÷30= 3amperes

You might be interested in
If we use 1 millimeter to represent 1 light-year, how large in diameter is the Milky Way Galaxy?
storchak [24]

Answer:

d.100 meters

Explanation:

The diameter of the Milky Way Galaxy is approximately 100,000 light years.

Here we are using 1 millimiter (1 mm) to represent 1 light-year (1 ly). So, we can set the following proportion:

1 mm : 1 ly = x : 100,000 ly

and by finding x, we find the diameter of the Milky Way Galaxy in the scale used:

x=\frac{(1mm )(100,000 ly)}{1 ly}=100,000 mm = 100 m

so the correct answer is

d. 100 meters

4 0
3 years ago
Which person is weightless?
ahrayia [7]

Answer: Option (b) is the correct answer.

Explanation:

The force of gravity acting on an object helps in determining the weight of an object. But a place where there will be no gravity or have zero gravitational pull then it means the person will be weightless.

For example, force of gravity on moon is zero which means any object or person on moon will be weightless.

On the other hand, when a child is in the air as she plays on a trampoline then it means gravitational pull form the earth is acting on it. So, it will definitely has some weight.

Similarly, a scuba diver exploring a deep-sea wreck is under the ground where there will be force of gravity. Hence, it will also have some weight.

Thus, we can conclude that an astronaut on the Moon is the person who is weightless.

7 0
3 years ago
How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?
saul85 [17]

100 meters divided by a speed of 12.5 meters a second equals 8 seconds.

5 0
3 years ago
What is the best explanation for why a magnet is different from a regular piece of metal?
arlik [135]

Answer:

in a magnet there is a magnetic field that draws ever mental to it

5 0
2 years ago
Kinetic energy varies jointly as the mass and the square of the velocity. A mass of 1515 grams and velocity of 77 centimeters pe
Alexus [3.1K]

Answer:

The second kinetic energy is 162 J.

Explanation:

Given that,

Mass, m_1=15\ g

Velocity, v_1=7\ cm/s

Kinetic energy, K_1=147\ ergs

Mass, m_2=10\ g

Velocity, v_2=9\ cm/s

We need to find kinetic energy K_2. Kinetic energy is given by :

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

So,

\dfrac{K_1}{K_2}=\dfrac{m_1}{m_2}\times \dfrac{v_1^2}{v_2^2}\\\\K_2=\dfrac{K_1}{\dfrac{m_1}{m_2}\times \dfrac{v_1^2}{v_2^2}}\\\\K_2=\dfrac{147}{\dfrac{15}{10}\times \dfrac{7^2}{9^2}}\\\\K_2=162\ J

So, the second kinetic energy is 162 J.

4 0
3 years ago
Other questions:
  • Write a simple rule that will tell a person how many water molecule will be lost while putting monosaccharides together to form
    13·1 answer
  • What tools/information do you think meteorologists need to predict the weather?
    12·2 answers
  • What is one way that early scientific practice differed from modern scientific practice?
    5·2 answers
  • A certain lightning bolt moves 50.0 C of charge. How many units of fundamental charge is this?
    9·1 answer
  • Which of the following experiments or phenomena provided evidence for the particle nature of light?
    7·2 answers
  • You can enter compound units that are combinations of other units that are multiplied together.Torque can be calculated by multi
    5·1 answer
  • Which particle would have the slowest rate of deposition? A.round particle B.very large particle C.particle with sharp ends D.pa
    14·2 answers
  • The process by which metamorphic rock changes to igneous rock begins with?
    15·1 answer
  • Please answer the questions... I will surely mark you as the brainliest according to me :)
    10·1 answer
  • The engine of a 550kg car is producing a net force of 11,000N. What is its acceleration?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!