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2 years ago

Where is the magnet that causes Earth’s magnetic field? What is this magnet made of?

Physics

1 answer:

Y_Kistochka [10]2 years ago

6 0

Answer:

The magnetic field of Earth is created by currents of electricity that flow in the molten center.

Explanation:

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Roots that grow horizontally are called

Romashka [77]

I believe they are called Rhizomes.

8 0

3 years ago

Read 2 more answers

A very light ping-pong ball moving east at a speed of 4 m/s collides with a very heavy stationary bowling ball. The Ping-Pong ba

KengaRu [80]

Answer:

They experience the same magnitude impulse

Explanation:

We have a ping-pong ball colliding with a stationary bowling ball. According to the law of conservation of momentum, we have that the total momentum before and after the collision must be conserved:

where is the initial momentum of the ping-poll ball

is the initial momentum of the bowling ball (which is zero, since the ball is stationary)

is the final momentum of the ping-poll ball

is the final momentum of the bowling ball

We can re-arrange the equation as follows or

which means (1) so the magnitude of the change in momentum of the ping-pong ball is equal to the magnitude of the change in momentum of the bowling ball.

However, we also know that the magnitude of the impulse on an object is equal to the change of momentum of the object:

(2) therefore, (1)+(2) tells us that the ping-pong ball and the bowling ball experiences the same magnitude impulse:

3 0

3 years ago

Calculate the wavelength in centimeters of radar energy at a frequency of 10 GHz. What is the frequency in gigahertz of radar en

konstantin123 [22]

Explanation:

(a) Frequency of radar energy, $f = 10\ GHz =10^{10}\ Hz$

The relation between frequency and wavelength is given by :

$c=f\lambda$

$\lambda=\dfrac{c}{f}$

$\lambda=\dfrac{3\times 10^8}{10^{10}}$

$\lambda=0.03\ m$

$\lambda=3\ cm$

(b) If wavelength, $\lambda=25\ cm=0.25\ m$

$c=f\lambda$

$f=\dfrac{c}{\lambda}$

$f=\dfrac{3\times 10^8}{0.25}$

$f=1.2\times 10^9\ Hz$

f = 1.2 GHz

Hence, this is the required solution.

7 0

2 years ago

Another unfortunate bug splatters on the windshield of a moving car. Which has the greater change in momentum---the bug or the c

bija089 [108]

Answer:

The change in momentum for the bug and the car will be equal, impulses will be equal in opposite directions and the bug will have a greater acceleration compared to the car, because it has a smaller mass.

Explanation:

Hope this helps..

4 0

2 years ago

First to answer will be the brainliest I need the answer ASAP answer questions 2 3 and 4

Irina-Kira [14]

2. False

Explanation: When a wave's energy increases, the wave length/frequency decreases.

3. Bass Guitar

Explanation: It has the lowest frequency.

4. Frequency

Explanation: The frequency is the number of vibrations per unit of time or the number of waves that passes a point per unit of time.

7 0

3 years ago