3 years ago

When ironing clothes the primary method of heat transfer is

Physics

1 answer:

SOVA2 [1]3 years ago

7 0

Conduction ... from the boiling water inside the iron, to the metal outside the shell, to the clothes on the board.

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A proton experiences a force of 4 Newton when it enters perpendicular to the direction of the magnetic field with a speed 100 m/

____ [38]

Answer:

F = 0 N

Explanation:

Force on a moving charge in constant magnetic field is given by the formula

$F = q(\vec v\times \vec B)$

so here it depends on the speed of charge, magnetic field and the angle between velocity of charge and the magnetic field

here when charge is moving with speed 100 m/s in a given magnetic field then the force on the charge is given as

$F = 4 N$

now when charge is moving parallel to the magnetic field with different speed then in that case

$\vec v \time \vec B = 0$

so here we have

F = 0

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3 years ago

Work out the kinetic energy of a 2.5 kg remote-controlled car that is moving at 2 m/s.

lbvjy [14]

Answer: 5 joules

Explanation:

mass=m=2.5kg

Velocity=v=2m/s

Kinetic energy=ke

ke=(m x v x v)/2

ke=(2.5 x 2 x 2)/2

Ke=10/2

Ke=5

Kinetic energy=5 joules

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3 years ago

Three identical capacitors are connected in series across a potential source (battery). If a charge of Q flows into this combina

inessss [21]

Answer:

C.Q/3

Explanation:

The total capacitances in series

1/C=1/C1+1/C2+1/C3

=1 /C+1/C+1/C

3/C

Ctotal=C/3

Charge in each capacitances

1/3*Q

Q/3

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3 years ago

A projectile is fired vertically from earth's surface with an initial speed of 5.3 km/s. neglecting air drag, how far above the

MaRussiya [10]

It will rise, and then fall back to the Earth’s surface.

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3 years ago

Henry shot a down tennis ball and a cricket ball of the same size to window glass. Which one will have more impact? Justify.

babunello [35]

Answer: The cricket ball bc of the material

Explanation:

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2 years ago