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3 years ago

State some important uses of magnet

2 answers:

4 0

Magnets are used in magnetic compass, doorbells, refrigerators. Magnets are used in dynamos, motors, loudspeakers, microphones etc. Ceramic magnets are used in computers. Magnets are used in toys to give a magic effect.

GarryVolchara [31]3 years ago

3 0

Use of magnet:

Magnets are used in magnetic compass, doorbells, refrigerators.
Magnets are used in dynamos, motors, loudspeakers, microphones etc.
Ceramic magnets are used in computers.
Magnets are used in toys to give a magic effect.

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What is tolerance? ?????????

aev [14]

Answer:

Toleration is the allowing, permitting, or acceptance of an action, idea, object, or person which one dislikes or disagrees with

Explanation:

may i get brainlist?

4 0

3 years ago

In a power plant, pipes transporting superheated vapor are very common. Superheated vapor flows at a rate of 0.3 kg/s inside a p

grigory [225]

Answer: $h=160.84 W/m^2-K$

Explanation:

Given

mass flow rate=0.3 kg/s

diameter of pipe=5 cm

length of pipe=10 m

Inside temperature=22

Pipe surface =100

Temperature drop=30

specific heat of vapor(c)=2190 J/kg.k

heat supplied $Q=mc\Delta T=0.3\times 2190\times (30)$

Heat due to convection =hA(100-30)

$A=\pi d\cdot L$

$A=\pi 0.05\times 10=1.571 m^2$

$Q_{convection}=h\times 1.571\times (100-22)=122.538 h$

$Q=Q_{convection}$

19,710=122.538 h

$h=160.84 W/m^2-K$

5 0

3 years ago

Which example has gravitational potential energy?

Lostsunrise [7]

B. An apple about to fall from a tree branch

This is because potential energy is the energy before its actuall motion, or before kinetic energy (energy in motion). And the apple ABOUT TO FALL mentions a gravitational example.

5 0

3 years ago

Read 2 more answers

Help and explain please

babunello [35]

Answer: a) Moment = 200N.m

b) F = 500N

Explanation: Moment or Torque is the tendency of a body to rotate because of an aplplied force. It can be calculated as

$\tau = F.r.sin\theta$