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]
3 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]3 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
5. Steve is driving in his car to take care of some errands. The first errand has him driving to a location 2 km East and 6 km N
Sever21 [200]

Answer:

gshshs

Explanation:

hshsksksksbsbbshd

3 0
3 years ago
For a maximum superelevation of 0.08 ft/ft and a degree of curve of 4o, calculate the maximum safe speed for the curve assuming
Mamont248 [21]

Answer:

Explanation:

Given that

Superelation= 0.08ft/ft

Given curve= u•

Curve junction factor= 0.13

DR= 5729.57795

R = 5729.57795/D

R = 5729.57795/4

R = 1432.4ft

c + f = V^2/gG

0.08 + 0.13 = V^2 / (32*1432.4)

V^2 = 9625.728 or V = 98 ft/sec

The designed speed for a project considered is a minimum value which means the highway design elements will meet or exceed the standards for the design speed. The maximum safe speed under normal condition is significantly greater than design speed

7 0
3 years ago
The force of replusion between two like charged particles will increase if​
Alex_Xolod [135]

Answer:

The distance of separation is decreased

Explanation:

From Cuolomb's law, we know that the strength of charge is inversely proportional to the distance of separation between the charges. To mean that increasing the distance let's say from 2m to 3 m would mean initial strength getting form 1/4 to 1/9 which is a decrease. The vice versa is true hence the force of repulsion can increase only when we decrease the distance of separation.

7 0
3 years ago
What’s the answer?? middle question
juin [17]
The new volume = 3 x 52.6 that’s because as the pressure decreases by 1/3 the volume increases x3
6 0
3 years ago
Which statements describe the motion of the object represented by the graph? Check all that apply.
Sav [38]

Answer:a, d, e

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • The closeness of measured values to an accepted value is the BLANK of the data ?
    14·1 answer
  • WILL MARK BRAINLIEST!!!!!!!!
    9·1 answer
  • Each graph has an x- and y-axis except
    13·1 answer
  • A ball is dropped from rest. What will be its speed when it hits the ground in each case. a. It is dropped from 0.5 meter above
    14·1 answer
  • What can you do to promote Americanism and love of our country?
    7·1 answer
  • Raindrops are falling straight down at 11 m/s when suddenly the wind starts blowing horizontally at a brisk 5.0 m/s. From your p
    6·1 answer
  • Assume that a clay model of a lion has a mass of 0.225 kg and travels on the ice at a speed of 0.85 m/s. It hits another clay mo
    8·1 answer
  • L 9.4.3 Test (CST): Bond. Molecular Bond,
    7·1 answer
  • What is the magnitude of force required to accelerate a car of mass 1.7 * 10 ^ 3 kg by 4.75 m/s
    13·1 answer
  • Answer the question correctly. Look at the 2 pictures.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!