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
Lyrx [107]
2 years ago
11

•Accordingto the graph, how many dark-colored moths existed in year 8?

Physics
2 answers:
Sunny_sXe [5.5K]2 years ago
6 0
Thw answer is letter a
ch4aika [34]2 years ago
4 0

Answer: Approximately 600

So your answer is C.

Explanation:

You might be interested in
Work is the quantity of _______________ used to move an object.
Andreas93 [3]
Scalar because it doesn't has direction
6 0
3 years ago
What distance will be traveled if you are going 120km/hr for 30 min?
nikklg [1K]

Answer:

60 km

Explanation:

For an object (or a person, such as in this case) moving at constant speed, the speed is equal to the ratio between the distance travelled and the time taken:

v=\frac{d}{t}

where

v is the speed

d is the distance

t is the time taken

In this case, we have:

v = 120 km/h is the speed

t = 30 min = 0.5 h is the time taken

Therefore, we can rearrange the equation to find the total distance travelled:

d=vt=(120)(0.5)=60 km

3 0
3 years ago
What is the wavelength of an earthquake wave if it has a speed of 9 km/s and a frequency of 2 Hz?
ira [324]
<span>2.56 sec (t=1/0.39)
f=3.9/10</span>
7 0
3 years ago
At the local playground, a 21-kg child sits on the right end of a horizontal teeter-totter, 1.8 m from the pivot point. On the l
Ksju [112]

Answer:

By convention a negative torque leads to clockwise rotation and a positive torque leads to counterclockwise rotation.

here weight of the child =21kgx9.8m/s2 = 205.8N

the torque exerted by the child Tc = - (1.8)(205.8) = -370.44N-m ,negative sign is inserted because this torque is clockwise and is therefore negative by convention.

torque exerted by adult Ta = 3(151) = 453N , counterclockwise torque.

net torque Tnet = -370.44+453 =82.56N , which is positive means counterclockwise rotation.

b) Ta = 2.5x151 = 377.5N-m

Tnet = -370.44+377.5 = 7.06N-m , positive ,counterclockwise rotation.

c)Ta = 2x151 = 302N-m

Tnet = -370.44+302 = -68.44N-m, negative,clockwise rotation.

5 0
3 years ago
Which part of earths surface has the greatest rotational speed
Anni [7]
Every point on the surface must have the same rotational speed.
Otherwise some places would rotate away from other places.

If the next block of your city rotated faster than the block that you live on,
then you could sit at home, look out the window, and watch your school
rotate past your house.

The map of the continents on the Earth would change constantly. 
6 0
3 years ago
Other questions:
  • If a net force accelerates a 4.5-kg tool at 40 m/s2, what acceleration would that same net force give to an 18-kg tool?
    9·1 answer
  • Which earth material is liquid at room temperature
    5·2 answers
  • A physical pendulum in the form of a planar object moves in simple harmonic motion with a frequency of 0.290 Hz. The pendulum ha
    9·1 answer
  • A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with
    5·2 answers
  • A _ spreads light into its own individual colors.
    14·2 answers
  • Plz help me with these :)
    12·2 answers
  • A scientist is testing a fertilizer used to make corn grow taller. The scientist
    9·1 answer
  • A spring with a spring constant of 2.5 N/m is stretched by 2
    7·1 answer
  • 7. What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second?
    12·1 answer
  • Which three workers uses technologies that apply the Doppler effect
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!