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pishuonlain [190]
4 years ago
14

A sample of iron receives 50.J of heat energy that raises the temperature of the iron

Physics
1 answer:
tatiyna4 years ago
6 0

Answer: 0.02kg

Explanation:

The quantity of heat energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since,

Q = 50 joules

Mass of iron sample = ? (let unknown value be Z)

C = 100 J/kg°C

Φ = 25°C

Then, Q = MCΦ

50J = Z x 100 J/kg°C x 25°C

50J = 2500J/kg x Z

Z = (50J/2500J/kg)

Z = 0.02kg

Thus, the mass of the iron sample is 0.02kg

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Pavlova-9 [17]

The limits which would be age appropriate for toddlers include being flexible and realistic while that of a teen should be more rigid.

<h3>Who are Toddlers?</h3>

This refers to a child whose age ranges from 1 year to 4 years and limits set for them should be flexible due to it helping them feel more secure and decreases anxiety.

Example of limits that you may have for a teen is reducing their screen time while an example of limits for toddlers is correcting their junk eating habits. Teens should have a rigid limit so as to enable them do the right things at all times due to their strong emotions.

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6 0
2 years ago
Make a graph of the data. You may use a graphing program. Think about what data should be on the y-axis and the x-axis. Be sure
Lynna [10]

Answer:

yes it was a constant speed and the car traveled 10 meters in 20 seconds.

Explanation:

8 0
4 years ago
Which part of a circuit creates an electric force field that makes it possible for the circuit to work?
Oliga [24]
Here, Your answer would be option D) Voltage Source.

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In short, Your correct Answer would be Option D)-Voltage Source.

Hope this helps!
7 0
4 years ago
Read 2 more answers
Determine the force exerted by two particles that have a charge of +0.35 Coulombs each and are 1 meter apart
konstantin123 [22]

The electric force between two charges is:

F = (9 x 10⁹) Q₁ Q₂ / D²

F is the force, in Newtons

Q₁ and Q₂ are the two charges, in Coulombs

D is the distance between them, in meters

For these two particles:

F = (9 x 10⁹) (0.35) (0.35) / (1)²

F = (9 x 0.35 x 0.35 x 10⁹) / (1)

<em>F = 1.10 x 10⁹  Newtons</em>

Thatsa lotta force . . . like <em>124 thousand tons</em> !

The reason it's so big is because the charges in this question are so big ... 0.35 Coulombs each.  1 Coulomb is a huge amount of charge.

Each of the particles feels the same force, pushing it away from the other particle.  (The electric force between two charges is always the same in both directions, just like the gravitational force between two masses.)

6 0
3 years ago
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A circular coil comprised of N = 180 closely wrapped turns of wire and has a radius R = 0.55 m. A counterclockwise current I = 3
Elanso [62]

Answer:

U = 0 J

Explanation:

Given

N = 180

R = 0.55 m

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Bx = 1.1 T

U = ?

We can apply the following equation:

U = - μtotal*B*Cos ∅

where

μtotal = N*I*A = N*I*(π*R²) = 180*3.4 A*(π*(0.55 m)²)

⇒   μtotal = 581.603 A*m²

then

U = - (581.603 A*m²)*(1.1 T)*Cos 90º = 0 J

as we know ∅ = 90º

7 0
3 years ago
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