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Vesnalui [34]
3 years ago
15

The charger for your electronic devices is a transformer. Suppose a 60 HzHz outlet voltage of 120 VV needs to be reduced to a de

vice voltage of 3.0 VV. The side of the transformer attached to the electronic device has 60 turns of wire.How many turns are on the side that plugs into the outlet?
Physics
1 answer:
photoshop1234 [79]3 years ago
4 0

Answer:

2400 turns

Explanation:

Applying

Vs/Vp = Ns/Np.................. Equation 1

Where Vs = Secondary voltage of the transformer, Vp = Primary voltage of the transformer, Ns = number of turns in the secondary side, Np = Number of turns in the primary side.

First we make Np the subject of the equation

Np = NsVp/Vs................. Equation 2

Given: Ns = 60 turns, Vp = 120 v Vs = 3.0 V

Substitute into equation 2

Np = 60(120)/3

Np = 2400 turns

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A 1-kg iron frying pan is placed on a stove. The pan increases from 20°C to 250°
timurjin [86]

Answer;

The temperature change for the second pan will be lower compared to the temperature change of the first pan

Explanation;

-The quantity of heat is given by multiplying mass by specific heat and by temperature change.

That is; Q = mcΔT

This means; the quantity of heat depends on the mass, specific heat capacity of a substance and also the change in temperature.

-Maintaining the same quantity of heat, with another pan of the same mass and greater specific heat capacity would mean that the change in temperature would be much less lower.

8 0
3 years ago
Read 2 more answers
bumper car A (281 kg) moving +2.82 m/s makes an elastic collision with bumper car B (209 kg) moving +1.72 m/s what is the veloci
spin [16.1K]

Answer: V1 = 3.559 - 0.744V2

Explanation: Given that the

bumper car A has

Mass M1 = (281 kg) moving with

Velocity U1 = 2.82 m/s

bumper car B has

Mass M2 = (209 kg) moving with

Velocity U2 = 1.72 m/s

Where U1, U2 are the initial velocity of the two cars

Since the collision is elastic, we will use the formula below,

M1U1 + M2U2 = M1V1 + M2V2

Substitute the values into the formula

281×2.28 + 209×1.72 = 281V1 + 209V2

640.68 + 359.48 = 281V1 + 209V2

1000.16 = 281V1 + 209V2

Make V1 the subject of formula

281V1 = 1000.16 - 209V2

V1 = 1000.16/281 - 209V2/281

V1 = 3.559 - 0.744V2

Therefore, the velocity of car A which

is V1 after the collision will be expressed as V1 = 3.559 - 0.744V2

6 0
3 years ago
Who is your favorite fictional character and why? Who is your favorite non-fictional person and why?
Andru [333]
My favorite fictional character is definitely Eren from Attack on Titan because he is strong, caring, and protects the people he loves

My least favorite is Bakugo from My Hero Academia because he is toxic, lowdown, and has severe anger issues.
7 0
2 years ago
An electron is moving at 2.02.0 ×× 105m/s105 m/s in the positive y direction. The magnetic force on the electron is 3.03.0 ×× 10
inn [45]

Answer:

The magnitude and direction of the magnetic field is 93.63 T in negative x direction.

Explanation:

Given;

speed of the electron in positive y direction, v = 2.0 x 10⁵ m/s

magnetic force on the electron, F in negative z direction = 3.0 x 10⁻¹² N

The magnitude of the magnetic force is given by;

F = Qv x B

B = F / Qv

B = \frac{3*10^{-12}}{ (1.602*10^{-19})(2*10^5)}\\\\B = 93.63 \ T

The direction of the magnetic field is is as;

Based on the direction of magnetic force (negative z direction), the charge will be directed into negative y-direction because electron is negatively charged. Thus, the direction of the magnetic field will be in the negative x-direction

F_{(-z)}= Q_{(-y)}V* B_{(-x)}

Therefore, the magnitude and direction of the magnetic field is 93.63 T in negative x direction.

6 0
2 years ago
Plants cause weathering, too. a seed that falls into a crack in a rock may grow there. growing roots may push on and enlarge the
Helga [31]

The process which involves plants to cause weathering to a seed that falls into a crack in a rock therefore, breaking apart the rock is called Mechanical weathering.

<h3>Mechanical weathering</h3>

This is defined as the set of weathering processes that break apart rocks into particles (sediment) through physical processes. The most common form of mechanical weathering is the freeze-thaw cycle. Water seeps into holes and cracks in rocks then the water freezes and expands, therefore making the holes larger eventually making the rock split apart.

Read more on Mechanical weathering:

brainly.com/question/857495

3 0
1 year ago
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