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3 years ago

8

Kyle is wondering what he is getting for his birthday. He decides to shake the box that contains his present. Kyle did not reali

ze it, but he was acting like a scientist. What was the first step Kyle took in this situation that a scientist also takes?

1 answer:

stiks02 [169]3 years ago

8 0

Answer: Asking questions

Explanation:

Scientists always start with their question before

Observing anything

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A current-carrying wire oriented north-south and laid over a compass deflects the compass 8° to the east. What is the magnitude

zhenek [66]

$2.8 \times 10^{-6}\ T$ is the magnitude of the magnetic field made by the current

<u>Explanation:</u>

Given data:

$\theta=8^{\circ}$

Magnetic field of earth, $B_{\text {earth}}=2 \times 10^{-5}\ \text {tesla}$

We need to find the magnetic field of wire, $B_{\text {wire }}$

The compass needle moves toward a direction of magnetic field. The current in wire makes a magnetic field in available space where the compass is on the ground. The vector sum of the Earth's magnetic field and the wire's magnetic field represents the net magnetic field, as shown in the attached drawing, expressing the angle:

$\tan \theta=\frac{B_{\text {wire}}}{B_{\text {earth}}}$

By substituting the given values, we get

$B_{\text {wire}}=\tan \theta \times B_{\text {earth}}=\tan 8^{\circ} \times 2 \times 10^{-5}=0.1405 \times 2 \times 10^{-5}$

$B_{\text {wire}}=0.28 \times 10^{-5}=2.8 \times 10^{-6}\ T$

4 0

3 years ago

when a man travel from hilly region to terai region what will happen to his weight ? explain with reason.

Sonbull [250]

Answer:

His weight increases.

Explanation:

The weight of the body is the gravitational force acting on the body at that location.
The gravitational force is defined as the product of mass of the body and the acceleration due to gravity.

W = m x g

The acceleration due to gravity of earth is high at the surface and decreases with respect to the height from the surface.
Hence, a man in the higher altitude regions experience lower weight that in the the lower altitude regions.

8 0

4 years ago

Maya uses a tuning fork of frequency 250 Hz to produce transverese waves on a stretched string. Her friend justin measure the di

Goshia [24]

Answer:

The velocity of the wave is 12.5 m/s

Explanation:

The given parameters are;

he frequency of the tuning fork, f = 250 Hz

The distance between successive crests of the wave formed, λ = 5 cm = 0.05 m

The velocity of a wave, v = f × λ

Where;

f = The frequency of the wave

λ = The wavelength of the wave - The distance between crests =

Substituting the known values gives;

v = 250 Hz × 0.05 m = 12.5 m/s

The velocity of the wave, v = 12.5 m/s.

6 0

3 years ago

Which seismic waves are generally the last to arrive after an earthquake?

34kurt

You're answer is B. P waves are more dynamic and have a great autonomy to be able generate a earthquake.

5 0

4 years ago

Teresa saw a large star outside of her window at ten o'clock last night.

nordsb [41]

Answer: The answer is C, Yes, her star will have appeared to move very slightly to the west.

Explanation: If your looking at a certain star, it usually goes to the west at night time very slightly, it doesn't go to the east because the Earth's axis tilts mostly on the west side. So it makes it true.

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4 years ago