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
STALIN [3.7K]
3 years ago
14

a 1 gram spiders sits on a platform rotating at 78 rpm. the spider is 15 cm from the centre disk. find the speed of the spider

Physics
1 answer:
olga nikolaevna [1]3 years ago
8 0

The spider is traveling in a circle with radius = 15cm

The circumference of any circle = <em>2 pi (radius)</em>
The circumference of the spider's path = 2 pi (15 cm) = 30 pi cm

The spider completes a trip around this path 78 times per minute.
Its speed, relative to you, is   

                               (78) x (30 pi) cm/min =

                                       2,340 pi cm/min =  7,351.33 cm/min =

                                     <em>  73.5133 meter/min =</em>

                                       <em>4.411 km/hr =</em>

                                         <em>2.74  miles/hour

</em>
(After the last appearance of pi,
all numbers are rounded.)<em>

</em>
You might be interested in
Which planet has the most extreme temperature variations
vichka [17]

Answer:

I believe Mercury has the most extreme temperatures in the solar system, ranging from -280?F at night to 800 degrees F during the day for parts of the surface.

Hope that helps! :)

5 0
3 years ago
Read 2 more answers
A hungry hawk was preying on a lizard who was running northwards to get away from the low-flying hawk. If the lizard can run 8m
Anastaziya [24]

Answer:

2m/s²

Explanation:

velocity = displacement (distance in a specified direction /time

8 0
3 years ago
Acceleration is defined as the change in velocity divided by
mihalych1998 [28]

Answer:

change in time

Explanation:

8 0
3 years ago
Based on the diagram of the two electrical circuits, assuming the lightbulbs are all identical, which circuit will draw more pow
pochemuha
In series connection  in orde to find the total resistance we add all the resistance capacity but in parallel, we take the 1/R  and resistance = V  hence the series connection takes up more power,
8 0
3 years ago
A white dwarf in a binary system suddenly flares, but in a few months it settles back to its original luminosity. This process m
Anvisha [2.4K]

Answer:

A Pulsar

Explanation:

Such white dwarf is a Pulsar (from pulsating star). Three main features we find in this kind of celestial body

1. Incredibly high density, in a pulsar there is not what we can define as free interspace. Everything is mass

2.- Huge rotational speed (more than hundreds of kilometer) spinning at more than hundreds of kilometer per second

3.-Intense magnetic field

Combinations of thse features make pulsar emits important amount of energies with pricese periods of time. And if on earth we look a jet of electromagnetic radiation with a precise rigurosity (at pricese period of time) is because we are looking a pulsar spinning and each time the radiation appears is a turn of the pulsar

4 0
3 years ago
Other questions:
  • Which inventor created a delivery system for electricity that was deemed safer than Thomas Edison's system?
    9·2 answers
  • There are many risks associated with nuclear power. Which is NOT a risk associated with nuclear power?
    14·2 answers
  • When a monochromatic light falls on a metallic surface, a number of electrons is
    12·1 answer
  • If the fundamental frequecny of a musical instrument is 42 Hz, what is the frequency of the second harmonic
    6·2 answers
  • Stapp rode a rocket sled, accelerating from rest to a top speed of 282 m/s (1015 km/h) in 5.00 s, and was brought jarringly back
    9·1 answer
  • An asteroid is speeding directly towards a space ship with a velocity of 255 m/s. If the asteroid is detected 8000 meters from t
    6·2 answers
  • What is the total amount of force needed to keep a 6.0 kg object moving at speed
    8·2 answers
  • An incident on route 12 summary?I need to describe what happens in the book in a short summary can anyone help?
    10·1 answer
  • To increase the gravitational force between the two objects above, I could
    6·1 answer
  • What is the function of a switch? pls HELPPPPPP TYSMMMMM &lt;3​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!