All categories

3 years ago

NEED HELP WITH THIS PROBLEMS. Thank you

Physics

2 answers:

maria [59]3 years ago

8 0

Hi!

Below are all the right options and attached file contains detailed explanation of all answers for better understanding.

1. D. be quartered

2. D. Albert Einstein

3. C. Michael Faraday

4. A. photon

5. B. field

6. C. series

7. C. conduction

8. B. induction

9. E. friction

10. A. directly

11. D. inversely

12. B. repel

13. A. attract

14. E. amperes

15. C. current

16. A. resistance

17. B. Maxwell

18. B. Closed

19. D. less

20. C. current

Hope this helps!

Download docx

e-lub [12.9K]3 years ago

8 0

<u>Answers</u>

1. C. be halved

The magnetic force is strongest at the poles. These force gets weaker as you move far away from the magnet.

2. D. Albert Einstein

The is the scientist who made many discoveries about light. Studying light has brought many technologies in the modern physics.

3. C. Michael Faraday

Michael Faraday is the sole inventor of the electrical generator.

4. A. photon

Light moves small packs called pack. these packets can be termed as packages.

5. B. field

Magnetic field is the region where the strength is experienced. This region has fields that points north to south.

6. Series

there are 2 types of circuits; series and parallel. For parallel circuits when one bulb goes off the rest remain on but for the series circuit, when one bulb goes off the rest goes off too.

7. C. conduction

Conduction is the method of charging a body where the changing body makes contact with the body been changed. The body been charged acquires the same charge as the charging body.

8. B. induction

Induction is the method of charging a body where the changing body makes no contact with the body been charged. The body been charged acquires the opposite as charge as the charging body.

9. E. friction

Friction is a method of charging a body by rubbing. The two bodies acquire opposite charges.

10.A. directly

When an object is placed between two charged bodies, it experiences a force due to interaction of the fields from the two charges. The magnitude of this force depend with the amount of charge of the individual bodies.

11. .Inversely

12. B. repel

The law of charges states that like charges repel while unlike charges attract.

13. A. attract

The law of charges states that like charges repel while unlike charges attract.

14. E. amperes

Current is the rate of flow of electric charges. These rate of flow of charges is amperes. The S.I units of current is Amperes.

15. C. current

Current is the rate of flow of electric charges passing a given point. These rate of flow of charges is amperes. The S.I units of current is Amperes.

16. A. resistance

Resistance is the opposition of electric current to flow in a conductor. This opposition causes the wires to heat up causing the heating effects.

17. B. Maxwell

Maxwell discovered that when an electric current is flowing through a conductor, it has an effect on magnetic compass.His law is called the Maxwell's swimming rule.

18. D. induction

The conventional current flows from positive side of a battery to the negative side. No current flows in an open circuit. In an induction circuit the electric current flows from negative to positive.

19. D. less

Thick wires has many free electrons that act as change carriers. This makes it a better conductor hence less resistance.

20. C. current

Thin wires have few free electrons. This electrons are the one that carry the current from one end to the other. The electromagnetic force in these wires is converted to current.

You might be interested in

Una persona de 80 kilogramos de masa se encuentra parada sobre una silla de 3 kilogramos de masa Cuál es la presión que ejerce e

MariettaO [177]

Answer:

de 20 miligramos cada pata dividiendo 80÷4=20

7 0

3 years ago

The speed of sound through glass is 16344 km/hr. What is the wavelength of a sound wave of frequency 824 Hz in glass

SIZIF [17.4K]

Answer:

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.

Explanation: i think this might help

8 0

3 years ago

Read 2 more answers

Why does a paper clip sink and a big ocean liner float? explain your answer.

slamgirl [31]

<span>Because of the density of the paperclip it sinks, but even though a boat is normally made of steal it contains an opposite force of gravity known as buoyancy. Buoyancy is the reason that a boat will float. Boat density is less weight than the water they are in so this is one reason that they are floaters.</span>

4 0

4 years ago

An object is placed 18 cm in front of spherical mirror.if the image is formed at 4cm to the right of the mirror, calculate it's

ivolga24 [154]

1) Focal length

We can find the focal length of the mirror by using the mirror equation:
$\frac{1}{f}= \frac{1}{d_o}+ \frac{1}{d_i}$ (1)
where
f is the focal length
$d_o$ is the distance of the object from the mirror
$d_i$ is the distance of the image from the mirror

In this case, $d_o = 18 cm$ , while $d_i=-4 cm$ (the distance of the image should be taken as negative, because the image is to the right (behind) of the mirror, so it is virtual). If we use these data inside (1), we find the focal length of the mirror:
$\frac{1}{f}= \frac{1}{18 cm}- \frac{1}{4 cm}=- \frac{7}{36 cm}$
from which we find
$f=- \frac{36}{7} cm=-5.1 cm$

2) The mirror is convex: in fact, for the sign convention, a concave mirror has positive focal length while a convex mirror has negative focal length. In this case, the focal length is negative, so the mirror is convex.

3) The image is virtual, because it is behind the mirror and in fact we have taken its distance from the mirror as negative.

4) The radius of curvature of a mirror is twice its focal length, so for the mirror in our problem the radius of curvature is:
$r=2f=2 \cdot 5.1 cm=10.2 cm$

3 0

4 years ago

At one instant, a 17.0-kg sled is moving over a horizontal surface of snow at 4.10 m/s. After 6.15 s has elapsed, the sled stops

jasenka [17]

Answer:

force = 11.33 $kg-m/s^{2}$