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
Ivenika [448]
2 years ago
7

PLEASE HELP !!! I NEED TO PASS

Physics
1 answer:
zhannawk [14.2K]2 years ago
7 0

Answer:

Sorry I don't know the answer .Hope other help you.sorryyyyyyyy

You might be interested in
Type of force that holds the nucleus of an atom together
Kamila [148]

Answer:

Nuclear Forces

Explanation:

The type  of force that holds the nucleus of an atom together is called Nuclear Forces.

7 0
3 years ago
A circular loop in the plane of a paper lies in a 0.45 T magnetic field pointing into the paper. The loop's diameter changes fro
Amanda [17]

Answer:

(A). The direction of the induced current will be clockwise.

(B). The magnitude of the average induced emf 16.87 mV.

(C). The induced current is 6.75 mA.

Explanation:

Given that,

Magnetic field = 0.45 T

The loop's diameter changes from 17.0 cm to 6.0 cm .

Time = 0.53 sec

(A). We need to find the direction of the induced current.

Using Lenz law

If the direction of magnetic field shows into the paper then the direction of the induced current will be clockwise.

(B). We need to calculate the magnetic flux

Using formula of flux

\phi_{1}=BA\cos\theta

Put the value into the formula

\phi_{1}=0.45\times(\pi\times(8.5\times10^{-2})^2)\cos0

\phi_{1}=0.01021\ Wb

We need to calculate the magnetic flux

Using formula of flux

\phi_{2}=BA\cos\theta

Put the value into the formula

\phi_{2}=0.45\times(\pi\times(3\times10^{-2})^2)\cos0

\phi_{2}=0.00127\ Wb

We need to calculate the magnitude of the average induced emf

Using formula of emf

\epsilon=-N(\dfrac{\Delta \phi}{\Delta t})

Put the value into t5he formula

\epsilon=-1\times(\dfrac{0.00127-0.01021}{0.53})

\epsilon=0.016867\ V

\epsilon=16.87\ mV

(C). If the coil resistance is 2.5 Ω.

We need to calculate the induced current

Using formula of current

I=\dfrac{\epsilon}{R}

Put the value into the formula

I=\dfrac{0.016867}{2.5}

I=0.00675\ A

I=6.75\ mA

Hence, (A). The direction of the induced current will be clockwise.

(B). The magnitude of the average induced emf 16.87 mV.

(C). The induced current is 6.75 mA.

5 0
3 years ago
Would be Mars colonized? Soon​
Andreas93 [3]

Answer:not as soon as possible,due to research made by Elon musk it's seems that's it's more cost full and rocket would be so giant,,also due to research made by biologist the effect of not be in gravity force for Long time (2 years)is not yet known

7 0
3 years ago
For a positive charge moving in the direction of the electric field,its potential energy increases and its electric potential de
Ira Lisetskai [31]

Answer:

its potential energy decreases and its electric potential decreases.

Explanation:

Let's consider a radial field for simplicity. We have:

- The electric potential of the field is given by:

V=\frac{kQ}{r}

where

k is the Coulomb's constant

Q is the charge source of the field

r is the distance from Q

We see that the electric potential decreases as we move away from the source. If we consider a positive charge q moving in the direction of the electric field, this charge q will move away from the charge Q (because the field lines generated by the positive particle Q point away from the particle), so the electric potential will decrease.

- The potential energy of the moving charge is given by

U=qV

where q is the magnitude of the charge. As we said previously, V is decreasing while the charge is moving in the direction of the field, so since U is directly proportional to V, U will decrease as well.

5 0
3 years ago
You are given three iron rods. Two of the rods are magnets but the third one is not. How could you use the three rods to definit
const2013 [10]

Answer:

A magnets always have two poles (north and south), the unmagnetized rod can be identified using properties of the poles of a magnet.

Explanation:

The law of magnetism states that like poles repel, while unlike poles attract. The simple experiment here is to use two rods at a time, keeping one of the poles of the first rod constant, while changing the poles of the other rod.

When the two rods are magnets, attraction and repulsion would be observed between the rods. But for the case of unmagnetized rod and one of the magnetised rod, only attraction is observed between the poles.

3 0
3 years ago
Other questions:
  • When the pressure at the bottom of a submerged object is greater than the pressure at the top of submerged object, buoyant force
    10·2 answers
  • Before there was central heating, hot water bottles were used to keep people warm at night. These flat containers were filled wi
    13·1 answer
  • True or false: objects fall toward earth at a rate of 9.8 m/s because of centripetal force.
    6·1 answer
  • When you put a book on a table the table pushes back. which newton law
    7·1 answer
  • Jupiter’s strength of gravity is greater than Earth’s strength of gravity. A person’s will be the same on Jupiter and Earth. A p
    14·2 answers
  • Is a broom an example of a wedge?
    11·1 answer
  • ОТВЕТЬТЕ !!!!СРОЧНО!!!
    14·1 answer
  • Which quantity must equal zero if a car is moving at a constant rate along a straight line?
    9·1 answer
  • Why are these waves called out phase waves?
    14·1 answer
  • Two astronauts are playing catch in a zero gravitational field. Astronaut 1 of mass m1 is initially moving to the right with spe
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!