1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kvv77 [185]
2 years ago
11

3 simple machines you find in a pinball machine

Physics
1 answer:
cestrela7 [59]2 years ago
6 0

lever (The things that flick the ball around)

Inclined plane (The hill the ball rolls down)

Wedge (The bumps that stop the ball from rolling certain places)

You might be interested in
You push a hockey puck that is initially at rest on slick ice by applying a constant force until the puck reaches a final veloci
stellarik [79]

Answer:

1. A

2. B or C

Explanation:

1.

F=ma, meaning that if you use two times more force on a constant mass, the acceleration must double. Acceleration is change in velocity, which means that if you are aiming for the same final velocity the change must happen in half of the time. Therefore, the correct answer is choice A.

2.

By Newton's first law, an object in motion will stay in motion unless an external force acts on it. Since there is nothing pushing the puck in the other direction, the puck will either keep on going for at a constant velocity or will reduce its speed gradually, depending on whether or not this ice is considered to be frictionless. Hope this helps!

4 0
3 years ago
What is a method to predict an earthquake?
Pie

Measurements of microtremors, slope of the land, and motion of tectonic plates predict earthquakes. But we can't predict WHEN accurately enough yet to make the prediction useful to the general public.

8 0
3 years ago
Viewed through a spectroscope, the spectral profile of a yellow street lamp has a narrow line in the yellow region of the visibl
muminat

Answer:

discrete lines are observed by the spectroscope, the emission of the lamp is of the ATOMIC source

Explanation:

Bulbs can emit light in several ways:

* When the emission is carried out by the heating of its filament, the bulb is called incandescent, in general its spectrum is similar to that of a black body, this is a continuous spectrum with a maximum dependent on the fourth power of the temperature of the filament.

* The emission can be by atomic transitions, in this case there is a discrete spectrum formed by the spectral lines of the material that forms the gas of the lamp, in general for the yellow emission the most used materials are mercury and sodium or a mixture of they.

Consequently, as discrete lines are observed by the spectroscope, the emission of the lamp is of the ATOMIC type

6 0
3 years ago
An electron is moving through an (almost) empty universe at a speed of 628 km,/s toward the only other object in the universe —
sattari [20]

Answer:

  r = 2,026 10⁹ m  and   T = 2.027 10⁴ s

Explanation:

For this exercise let's use Newton's second law

        F = m a

where the force is electric

        F = k \frac{q_1q_2}{r^2}

Acceleration is centripetal

        a = v² / r

we substitute

        k \frac{q_1q_2}{r^2} = m \frac{v^2}{r}

        r = k \frac{q_1q_2}{m \  v^2}          (1)

let's look for the charge in the insulating sphere

          ρ = q₂ / V

          q₂ = ρ V

the volume of the sphere is

         v = 4/3 π r³

we substitute

        q₂ = ρ \frac{4}{3} π r³

        q₂ = 3 10⁻⁹ \frac{4}{3} π 4³

        q₂ = 8.04 10⁻⁷ C

let's calculate the radius with equation 1

        r = 9 10⁹  1.6 10⁻¹⁹  8.04 10⁻⁷ /(9.1  10⁻³¹ 628 10³)

        r = 2,026 10⁹ m

this is the radius of the electron orbit around the charged sphere.

Since the orbit is circulating, the speed (speed modulus) is constant, we can use the uniform motion ratio

        v = x / t

the distance traveled in a circle is

        x = 2π r

In this case, time is the period

        v = 2π r /T

        T = 2π r /v

let's calculate

        T = 2π 2,026 10⁹/628 103

        T = 2.027 10⁴ s

4 0
3 years ago
The AM radio station WDRJ broadcasts news and sports at a frequency of 704 kHz (kilohertz). What is the wavelength of the radio
Doss [256]

Answer:

AM broadcasts occur on North American airwaves in the medium wave frequency range of 525 to 1705 kHz (known as the “standard broadcast band”). The band was expanded in the 1990s by adding nine channels from 1605 to 1705 kHz.

7 0
3 years ago
Other questions:
  • A meter movement has a series resistance of 1Ω and a full scale current of 1mA. Use this meter movement to design a 10V full sca
    15·1 answer
  • A roller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4
    12·2 answers
  • A train accelerated from 5 km/hr in 0.5 hours. what was the rate of acceleration?
    6·1 answer
  • In genetic cross, the________ that each parent passes to its offspring based_______?
    13·2 answers
  • How can you tell if your arm is brocken?
    5·2 answers
  • Can someone please help me it would mean alot​
    10·1 answer
  • Which of the following has larger in a car or a bicycle ride with reason ​
    9·2 answers
  • Explain what the ionosphere is and how it interacts with some radio waves.
    13·1 answer
  • What is electrical energy ?
    11·2 answers
  • Tom has a mass of 50,000 g and runs up a flight of stairs 4 m high in 12.5 seconds.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!