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larisa [96]
3 years ago
5

I’ll give brainliest and 10 points

Physics
1 answer:
leonid [27]3 years ago
7 0

Answer:

what's these its D okkkk

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Need help ASAP
devlian [24]

Answer:

cell pohnes convert sound waves into radio waves

electromagnetic waves used in cellphone communications are called: radio waves

To send out a radio signal far and wide.. it is called: broadcast

Explanation:

5 0
3 years ago
Read 2 more answers
A velocity selector can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of th
Contact [7]

Answer:

C. 450v

Explanation:

Using

Voltage= B*distance of separation*velocity

3mm x 0.3T x 5E5m/s

= 450v

5 0
3 years ago
If a light ray from a candle strikes a mirror at an angle of 40° with the normal, at what angle will the ray reflect?. Select on
tekilochka [14]

Answer: The correct answer is option (C).

Explanation:

Law of reflection:

  • Angle of incident is equal to angle of reflection;∠i=∠r
  • Incident ray, reflected ray and normal to the reflecting interface at the point of incidence all lie in same plane.

When light ray from candle strikes a mirror at an angle of 40° with the normal, then the angle at which ray reflected back will 40°.


6 0
4 years ago
Read 2 more answers
Consider an object on a rotating disk a distance r from its center, held in place on the disk by static friction. Which of the f
SVEN [57.7K]

Answer:

A) False

B) False

C) True

D) True

E) True

Explanation:

A) The formula for tangential speed v in term of angular speed ω and radius of rotation r is

v = \omega r

So if the angular speed is constant and 0, the tangential speed is also 0. A) is false

B) False because of the centripetal acceleration:

a_c = \omega^2 r

C) True because of the formula for tangential acceleration in term of angular acceleration α is

a_t = \alpha r

D) True because same as D), if it has angular acceleration, it would have a tangential acceleration. Also from B) the centripetal acceleration will come with time as soon as angular speed is generated by angular acceleration.

E) True and same explanation as from B)

8 0
3 years ago
Complete the statement by filling in the Blanks:
Anika [276]

Answer:

induced current

Explanation:

intentionally manipulated.

5 0
3 years ago
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