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4 years ago

Please answer this question asap

Physics

1 answer:

ICE Princess25 [194]4 years ago

6 0

Answer:

The magnetic compass shows no deflection.

Explanation:

When a magnetic compass is placed on a current-carrying conductor, the compass needle shows deflection.
When the direction of the current is reversed, the needle deflects in the opposite direction.
This is due to the fact that the current-carrying conductor generates a magnetic field around it.
If the direction of the current is reversed, the magnetic polarization changes.
This phenomenon was first noticed by Oersted, and later it helped to develop electromagnetism.

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If the car’s speed decreases at a constant rate from 64 mi/h to 30 mi/h in 3.0 s, what is the magnitude of its acceleration, ass

mixas84 [53]

Answer: $3.874 m/s^2$

Explanation:

Given

Car speed decreases at a constant rate from 64 mi/h to 30 mi/h

in 3 sec

$60mi/h \approx 26.8224m/s$

$34mi/h \approx 15.1994 m/s$

we know acceleration is given by $=\frac{velocity}{Time}$

$a=\frac{15.1994-26.8224}{3}$

$a=-3.874 m/s^2$

negative indicates that it is stopping the car

Distance traveled

$v^2-u^2=2as$

$\left ( 15.1994\right )^2-\left ( 26.8224\right )^2=2\left ( -3.874\right )s$

$s=\frac{488.419}{2\times 3.874}$

s=63.038 m

7 0

3 years ago

If you good with science multiple choice

miss Akunina [59]

Answer:

If it had more or less mass, the atmosphere would be very different with either too much ammonia and methane or too little oxygen and water

Explanation:

6 0

3 years ago

Which type of heat transfer causes your face to feel warm when you sit in the sun?

MA_775_DIABLO [31]

Answer:

Radiation

Explanation:

The sun radiates energy to the earth to make it warmer near the equator.

6 0

4 years ago

What should a scientist do if the results and data do not support his/her hypothesis?

german

Answer: If it does not support the hypothesis, you may choose to change the hypothesis or write a new one based on what was learned during the experiment.

Hypothesize a new answer to the question and a new way to test it.

Explanation:

8 0

3 years ago

Energy in the form of motion is potential energy.<br> True<br> False

Veseljchak [2.6K]

False

Energy in the form of motion is kinetic energy

Stored energy is called potential energy

5 0

3 years ago