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
Karolina [17]
3 years ago
15

Some plants disperse their seeds by having the fruit split and contract, propelling the seeds through the air. The trajectory of

these seeds can be determined by using a high-speed camera. In one type of plant, seeds are projected at 20 cm above ground level with initial speeds between 2.3 m/s and 4.7 m/s . The launch angle is measured from the horizontal, with +90∘ corresponding to an initial velocity straight upward and −90∘ straight downward.
Physics
1 answer:
Pani-rosa [81]3 years ago
3 0

Answer: 23000 frames/s

Explanation:

The rest of the statement of the question is presented below:

The experiment is designed so that the seeds move no more than 0.20 mm between photographic frames. What minimum frame rate for the high-speed camera is needed to achieve this?

We know the <u>maximum initial speed</u> at which the seeds are dispersed is:

V_{i}=4,7 m/s

In addition, we know the <u>maximum distance</u> at which the seeds move between photographic frames is:

d_{max}=0.20 mm \frac{1m}{1000 m}=0.0002 m

And we need to find the minimum frame rate of the camera with these given conditions. This can be found by finding the time t for each frame and then the frame rate:

Finding the time:

t=\frac{d_{max}}{V_{i}}

t=\frac{0.0002 m}{4.6 m/s}

t=0.00004347 s/frame This  is the time for each frame

Now we need to find the frame rate, which is the frequency at which the photos are taken.

In this sense, frequency f is defined as:

f=\frac{1}{t}

f=\frac{1}{0.00004347 s/frame}

Finally:

f=23000 frames/s

Hence, the minimum frame rate is 23000 frames per second.

You might be interested in
Robyn has been working out five days a week for the past six months. She is now planning to take a month-long break from the gym
Vsevolod [243]
The answer is C -
because reversibility means when taking a break it'll be hard to get back on schedule
3 0
3 years ago
What is one advantage of using primary sources when doing research on an
WITCHER [35]

One advantage of using primary sources when doing research on an experiment is, it contain more details about the experiment. Thus, option D is right .

To find the answer, we have to know more about the Primary sources.

<h3>What is the advantages of primary sources?</h3>
  • Primary sources are the direct or first-hand excerpts that scientists have independently written based on their experiments in order to support their research.
  • Utilizing original sources encourages analytical and critical thought in relation to the research.
  • It aids in exploring from various angles, which leads to the discovery of extra facts.
  • Primary data aids in navigating the conflicts. Since it is a direct resource related to the experiment, it serves as evidence for the data.

Thus, we can conclude that, Primary sources contain more details about the experiment.

Learn more about the Primary sources here:

brainly.com/question/24190082

#SPJ9

5 0
1 year ago
A 150-newton force, applied to a wooden crate at an angle of 30° above the horizontal, causesthe crate to travel at constant vel
omeli [17]

Answer:

Explanation:

A component of 150 N in vertical direction will reduce the magnitude of reaction force.

reaction force exerted by the floor

= mg - 150 sin 30

where m is mass of the crate .

the magnitude of the horizontal component of the 150-newton force

150 cos30

= 130 N

This force tries to pull the crate in forward direction with acceleration but it has no acceleration . It is so because frictional force of equal magnitude acts on it in opposite direction which makes the net force acting on it equal to zero.

Hence frictional force is equal to 150 cos 30.

= 130 N .

3 0
3 years ago
A ball is ejected to the right with an unknown horizontal velocity from the top of a pillar that is 50 meters in height. At the
dimulka [17.4K]

Answer:

15.67 m/s

Explanation:

The ball has a projectile motion, with a horizontal uniform motion with constant speed and a vertical accelerated motion with constant acceleration g=9.8 m/s^2 downward.

Let's consider the vertical motion only first: the vertical distance covered by the ball, which is S=50 m, is given by

S=\frac{1}{2}gt^2

where t is the time of the fall. Substituting S=50 m and re-arranging the equation, we can find t:

t=\sqrt{\frac{2S}{g}}=\sqrt{\frac{2(50 m)}{9.8 m/s^2}}=3.19 s

Now we now that the ball must cover a distance of 50 meters horizontally during this time, in order to fall inside the carriage; therefore, the velocity of the carriage should be:

v=\frac{d}{t}=\frac{50 m}{3.19 s}=15.67 m/s

8 0
3 years ago
Suppose you were asked to find the torque about point p due to the normal force n in terms of given quantities. which method of
igomit [66]

Answer:

T=Lnsin\alpha

Please check the attached

Explanation:

The torque can simply be calculated by multiplying the length of the rod by the perpendicular force n as shown in the attached figure.

Note that sin90=1

T=Lsin\alpha(nsin90)

T=Lsin\alphaxn

T=Lnsin\alpha

7 0
3 years ago
Other questions:
  • Representar las uniones interatomicas<br> a. kcl<br> b. ZnO<br> c. ZnBr2<br> d. BeI2
    7·1 answer
  • A 10.0-cm-diameter and a 20.0-cm-diameter charged ring are arranged concentrically (so they share the same axis). Assume both ar
    6·1 answer
  • Two long, parallel wires are separated by a distance of 2.30 cm . The force per unit length that each wire exerts on the other i
    5·1 answer
  • If Teresa's daughter is my daughters mother who am I to Teresa?
    9·2 answers
  • What are the odds of nonsmokers developing cardiovascular disease when compared to smokers?
    15·2 answers
  • Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg skater acquires a speed of
    7·1 answer
  • What it the mass of Jupiter?
    8·2 answers
  • 12. One object has half the mass of another object. The first object also has half the ---.
    7·1 answer
  • What does your slope stand for?​
    8·1 answer
  • 50 points for 5 questions p.s if u get brainliest u get 50 moe and then u have 100 SO YAAAAAAY p.s dont answer the new one i for
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!