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
Verizon [17]
3 years ago
8

According to a certain estimate, the depth N(t), in centimeters, of the water in a certain tank at t hours past 2:00 in the morn

ing is given by N(t)= -20(t - 5)^2 + 500 for 0 ≤ t ≤ 10. According to this estimate, at what time in the morning does the depth of the water in the tank reach its maximum?a) 5:30 b) 7:00 c) 7:30 d) 8:00 e) 9:00
Physics
1 answer:
never [62]3 years ago
6 0

Answer:

b) 7.00

Explanation:

N( t ) = -20( t - 5 )²

dN/ dt = -20 x 2 ( t - 5 )

For maximum N ( depth )

dN/dt = 0

- 40 ( t - 5 ) = 0

t = 5

So at 2 + 5 = 7 .00 am depth of water reaches its maximum.

You might be interested in
A 70.0 kg skydiver falls towards the earth. If the force due to air resistance is 0 N, what is the acceleration of the skydiver?
lukranit [14]
The gravitational acceleration g = 9.81 m/s²
7 0
3 years ago
Read 2 more answers
Assume you are riding in a plane that is moving at a speed of 600kmh relative to the ground. If you walk from the back to the fr
jok3333 [9.3K]
C. 600 km/h is the answer for this question
5 0
3 years ago
A force of 8,480 N is applied to a cart to accelerate it at a rate of 26.5 m/s2. What is the mass of the cart?
katrin2010 [14]

Answer:

<h2>320</h2>

Just use F =ma where m is mass and a is acc.

8 0
3 years ago
The largest salami in the world was made in Norway. If a hungry mouse ran around the salami's circumference with a tangential sp
Nadya [2.5K]

Answer:

Radius of the salami = 9.9 cm

Explanation:

The formula for calculating the radius is given below:

a = v^2/r

where a represents acceleration

v represents velocity

r represents radius

As hungry mouse ran around the salami's circumference with a tangential speed of 0.17 m/s so that means velocity = 0.17 m/s.

The centripetal acceleration of the mouse = 0.29 m/s^2

putting these values in the above formula, we get

0.29 = 0.17^2 / r

After rearranging, we get,

r = 0.17^2 / 0.29

r = 0.099 m

r = 9.9 cm

so the radius of the salami = 9.9 cm

8 0
3 years ago
PLEASEE HELP WILLL GIVE 15+ POINTS AND BRAINLIEST PLEASEEEEEEEEEEEEEEEEEEEEEEE
Dovator [93]

um you can't really get help on this it's mostly you sorry

4 0
3 years ago
Other questions:
  • surface is tipped to all principal planes of projection. Because it is not perpendicular to any projection plane, it cannot appe
    5·1 answer
  • Suppose you have thrown a rock nearly straight up at a coconut in a palm tree,and the rock misses on the way up but hits the coc
    5·1 answer
  • An electric field of magnitude 2.35 V/m is oriented at an angle of 25.0° with respect to the positive z-direction. Determine the
    12·1 answer
  • The magnetic flux that passes through one turn of a 26-turn coil of wire changes to 4.5 Wb from 12.0 Wb in a time of 0.034 s. Th
    7·1 answer
  • How to calculate the number of protons and neutrons in elements
    7·1 answer
  • The potential energy of a spring is a. inversely proportional to the square of the amount b. the spring that is stretched from i
    13·1 answer
  • A fluid moves through a tube of length 1 meter and radius r=0.002±0.0002 meters under a pressure p=4⋅105±1750 pascals, at a rate
    15·1 answer
  • Question: The stored energy that holds the protons and neutrons together inside an atom is
    10·2 answers
  • As a object falls from a high-flying stationary helicopter, its velocity increases and its acceleration ____.
    9·2 answers
  • A wheelchair moves upward on a 7.1 degree ramp at a speed of 20km/h what is the horizontal velocity
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!