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Nana76 [90]
3 years ago
13

The driving force for an electric current is called

Physics
2 answers:
qaws [65]3 years ago
6 0
Its called electro motive force . let me know if its right

Mekhanik [1.2K]3 years ago
5 0
It's electro motive force (end)
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I NEED HELP ASAP IM ON TIMER !!!!
Angelina_Jolie [31]

Answer:

a.) 20 km east

b.) 50 km west

c.) 80 km west

Explanation:

As given,

Railway station -     A            B              C

Distance(km) -       0            30             60

Starts from A , train reaches B be in 15 minutes

Starts from A , train reaches C be in 30 minutes

a.)

If A is origin

As train covers 30km = 15 minutes

⇒ 15 minutes = 30 km

    1 minute = \frac{30}{15} = 2 km

⇒ 10 minutes = 2×10 = 20 km

∴ we get

The position of the train moving from station A to station B after 10 minutes = 20 km east

b.)

If B is origin then , the position of  the train moving from station A to station B after 10 minutes = 30 + 20  = 50 km west

( Because B is the origin , so firstly train go from B to A in 15 minutes ( 30 km ) then A to B in 10 minutes (20 km) )

c.)

If C is the origin then , the position of  the train moving from station A to station B after 10 minutes = 60 + 20  = 80 km west

( Because C is the origin , so firstly train go from C to A in 30 minutes ( 60 km ) then A to B in 10 minutes (20 km) )

8 0
3 years ago
A force on a particle depends on position such that f(x) = (3.00 n/m2)x 2 + (3.50 n/m)x for a particle constrained to move along
dmitriy555 [2]
M = 0.21x ENJOY MY FRIend
4 0
3 years ago
Read 2 more answers
What is simple machines and it type.I need it today please​
raketka [301]

Simple machines are tools, devices or objects that are used to make work easier.

TYPES OF SIMPLE MACHINES.

  • Levers
  • Inclined Plane
  • Wedges
  • Screw
  • Pulley
  • Wheel & Axle

<u>T</u><u>H</u><u>E</u><u> </u><u>L</u><u>E</u><u>V</u><u>E</u><u>R</u><u>S</u>

A lever is simply a plank or ridge beam that is free to rotate on a pivot.

<u>P</u><u>A</u><u>R</u><u>T</u><u>S</u><u> </u><u>O</u><u>F</u><u> </u><u>A</u><u> </u><u>L</u><u>E</u><u>V</u><u>E</u><u>R</u><u> </u>

  1. Load
  2. Effort
  3. Fulcrum or pivot

<u>C</u><u>L</u><u>A</u><u>S</u><u>S</u><u>E</u><u>S</u><u> </u><u>O</u><u>F</u><u> </u><u>L</u><u>E</u><u>V</u><u>E</u><u>R</u><u>S</u>

THE FIRST CLASS LEVER

In this class, the FULCRUM is between the EFFORT and the LOAD. The mechanical advantage is more if the load is closer to the FULCRUM. Examples: seesaws, boat oars and crowbars.

THE SECOND CLASS LEVER

In this class, the LOAD is between the EFFORT and the FULCRUM. The mechanical advantage is more if the LOAD is closer to the FULCRUM. Example: wheelbarrow.

THE THIRD CLASS LEVER

In this class, the EFFORT is between the LOAD and the FULCRUM. The mechanical advantage is more if the EFFORT is closer to the LOAD. Example: garden shovel.

<u>T</u><u>H</u><u>E</u><u> </u><u>INCLINED</u><u> </u><u>PLANE</u><u> </u><u>OR</u><u> </u><u>RAMP</u>

An inclined plane is a simple machine with a sloping surface. It makes it easier for us to move objects from lower grounds to higher grounds.

<u>W</u><u>E</u><u>D</u><u>G</u><u>E</u><u>S</u>

A wedge is simply a triangular tool, often made of wood, stone, metal or plastic. It is thick at one end and tapers to a thin or sharp edge at the other end. Examples: knife, axe, doorstopper, nail, blade on the snow plough or farmer grader.

<u>PULLEY</u>

A pulley is simply a wheel with a groove in it, and a rope in the groove. It is used to lift heavy objects from the ground to high places.

<u>WHEEL</u><u> </u><u>&</u><u> </u><u>AXLE</u>

Involves two circular objects joined at the center. It works when force is applied to the wheel or when force is applied to the axle. Example: door knob.

4 0
3 years ago
A mass of 0.34 kg is fixed to the end of a 1.4 m long string that is fixed at the other end. Initially at rest, he mass is made
frozen [14]

At time t seconds, the mass has angular speed

\omega = \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) t

and hence linear speed

v = (1.4\,\mathrm m) \omega = (1.4\,\mathrm m) \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) t

After 8 s, its linear speed is

v = (1.4\,\mathrm m) \left(3.31\dfrac{\rm rad}{\mathrm s^2}\right) (8\,\mathrm s) = 37.072 \dfrac{\rm m}{\rm s} \approx 37 \dfrac{\rm m}{\rm s}

and has centripetal acceleration with magnitude

a = \dfrac{v^2}{1.4\,\rm m} \approx 981.667\dfrac{\rm m}{\mathrm s^2} \approx 980 \dfrac{\rm m}{\mathrm s^2}

To maintain this linear speed, by Newton's second law the required centripetal force should have magnitude

F = (0.34\,\mathrm{kg}) a \approx 333.767\,\mathrm N \approx \boxed{330 \,\mathrm N}

5 0
2 years ago
TRUE/FALSE, the scientific question is written like “I wonder if [dependent variable] is affected by [independent variable].”
sergiy2304 [10]
True as the independent variable is over the dependent variable and controls it as the dependent relies on the independent.
6 0
3 years ago
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