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melomori [17]
3 years ago
15

Joan makes the device shown in her science class. What would happen to the magnetic field if she connects the battery in the opp

osite direction?
Physics
2 answers:
Maru [420]3 years ago
6 0

The field reverses its poles, meaning that the flow of negative and positive charges will cause an overall switch in the magnetic poles of the field.

brilliants [131]3 years ago
5 0

Answer:

Explanation:

When the electric current flows through a conductor a magnetic field is produced near the conductor.

When the direction of current is reversed the direction of magnetic field is also reversed.

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An investigation has been completed similar to the one on latent heat of fusion, where steam is bubbled through a container of w
allochka39001 [22]

Answer:

Q_a=330 cal

Q_w=6000cal

Explanation:

From the question we are told that

Mass of the aluminum container 50 g

Mass of the container and water 250 g

Mass of the water 200 g

Initial temperature of the container and water 20°C

Temperature of the steam 100°C

Final temperature of the container, water, and condensed steam 50°C

Mass of the container, water, and condensed steam 261 g

Mass of the steam 11 g Specific heat of aluminum 0.22 cal/g°C

a) Heat energy on container

Generally the formula for mathematically solving heat gain

      Q_c=M_c *C_c*( \triangle T)

Therefore imputing variables we have

      Q_a=50g *0.22*50-20  

      Q_a=330 cal

b) Heat energy on water

Generally the formula for mathematically solving heat gain

       Q_w=M_w *C_w*( \triangle T)

Therefore imputing variables we have

       Q_w=200 *1* 50-204

       Q_w=6000cal

7 0
3 years ago
Sunny watched a video of her professor's lecture on genes and environment the night before class. In class the next day, her pro
IgorLugansk [536]

If Sunny watched a video of her professor’s lecture on genes and environment the night before class and her professor facilitated a discussion about the role of nature and nurture with respect to development, Sunny is experiencing being advanced in their lesson. Nurture plays an important part in this. The environment poses an encouraging and stimulating atmosphere where Sunny might enjoy learning about things.  

7 0
3 years ago
Read 2 more answers
During combustion reactions, explain why the energy of the reactants must exceed the total energy of the products​
maxonik [38]

Answer:

In these reactions the products are higher in energy than the reactants. ... This barrier is due to the fact that to make CO2 and H2O we have to break 4 carbon-hydrogen bonds and some ...

Explanation:

8 0
3 years ago
Both a 3 kg book and 5 kg bowling ball are sitting still on the floor. What is true about the kinetic energy of the objects? Exp
Charra [1.4K]

Answer:

The kinetic energy for both objects is the same.

Explanation:

While in other cases the kinetic energies of two objects that have different masses might be different depending on their velocities, in this case both the 3 kg book and 5 kg bowling ball have the same kinetic energy.

This is because kinetic energy is calculated using the formula: K = 1/2 * m * v^2, where m represents the mass and v represents the velocity of the object.

Since the book and the bowling ball are sitting still on the floor, their velocities are zero.  Hence, when we plug in 0 for velocity into the equation for kinetic energy, we will get that the kinetic energy is 0 for the book and the bowling ball.

Hope this helps!

6 0
3 years ago
If Siobhan hits a 0.25 kg volleyball with 0.5 N of force, what is the acceleration of the ball?
Alekssandra [29.7K]

Answer:

2 meters per second²

Explanation:

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