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
ohaa [14]
2 years ago
8

A flare is launched from a boat. The height, , in meters, of the flare above the water is approximately modelled by the function

, where is the number of seconds after the flare is launched. How many seconds will it take for the flare to return to the water?
Physics
1 answer:
Tpy6a [65]2 years ago
6 0

Answer:

10 seconds

Explanation:

If the height is modeled by the function h(t)=-15t^{2} +150t, then the seconds it takes to reach the water (when the height equals 0) is modeled by the following.

0=-15t^{2} +150t\\0=-15t*(t-10)\\\\t=0\\t=10

You might be interested in
George walks to a friend's house. He walks 850 meters north before he realizes he walked too far.
anyanavicka [17]

Answer:

<h2>44 m/s</h2>

Explanation:

In this problem we are expected to calculate the velocity of Georges movements.

Given data

Total distance covered by  George= 850+250= 1100 meters

Time taken  by  George to cover the total distance= 25 seconds

We know that velocity is, v= distance/ time

Therefore substituting our data into the expression for velocity we have

v= 1100/ 25= 44 m/s

Hence the velocity in m/s is 44

7 0
2 years ago
Atoms of two different elements must have different
Tresset [83]

Answer:

Number of neautrons

Explanation:

Atoms from two different elements may have the same number of neutrons, but never the same number of protons. The number of protons is unique to the element and represents the atomic number. (sorcastic.org)

4 0
3 years ago
How do sports play a role in American Culture? Is this different from how sports play a role in other cultures?
Nikolay [14]

Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.

4 0
2 years ago
What kind of process can create "rogue" waves?
algol [13]
The correct answer for the question that is being presented above is this one: "a. Constructive interference." The kind of process that can create "rogue" waves is constructive interference. Constructive interference refers to <span>the </span>interference<span> of two or more waves of equal frequency and phase creating a mutual one.</span>
3 0
2 years ago
Read 2 more answers
8. Noticing how much food is on your lunch<br> tray is a quantitative observation because
zhenek [66]

Answer:

you are making an observation that uses numbers.

Explanation:

5 0
2 years ago
Other questions:
  • Which statement is true?
    10·1 answer
  • The Importance of Assuming Responsibilities and Self-Esteem in Acquiring the Accuracy and Precision of Measurements.
    13·1 answer
  • Can someone please help, ty!
    10·1 answer
  • If there is a current of 15A in a circuit for 5 minutes, what quantity of electric charge flow through the circuit?
    7·1 answer
  • 1. Calculate the kinetic energy of a moving object, its mass= 100 kg, and its velocity= 12 m/s.
    11·1 answer
  • Which of Newton's laws explains why your hands get red when you press them hard against a wall? A. Newton's law of gravity B. Ne
    15·2 answers
  • A 350 −Ω resistor and a 6.40 −μF capacitor are connected in parallel to an ac generator that supplies an rms voltage of 220 V at
    13·1 answer
  • AP physics here! Please help me answer only this question and then explain how you got your answer. After that, I will do the re
    7·1 answer
  • The loudness of a sound is determined by the __________, or height, of the sound wave.
    11·1 answer
  • What is the force of gravity between two 50.0kg masses that are separated by 0.300m?3.71x10-8N5.59x10-7N2.78x104N1.85x10-6N
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!