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
Pavel [41]
3 years ago
7

Consider a particle moving along the x-axis where x(t) is the position of the particle at time t, x' (t) is its velocity, and x'

' (t) is its acceleration. x(t) = t3 − 12t2 + 21t − 9, 0 ≤ t ≤ 10 (a) Find the velocity and acceleration of the particle.
Physics
1 answer:
nignag [31]3 years ago
5 0

The position of the particle is given by:

x(t) = t³ - 12t² + 21t - 9

Differentiate x(t) with respect to t to find the velocity x'(t):

x'(t) = 3t² - 24t + 21

Differentiate x'(t) with respect to t to find the acceleration x''(t):

x''(t) = 6t - 24

You might be interested in
A family shares the same hairdryer.
IceJOKER [234]

Answer:

Idk I’m sorry

Explanation:

Sorry

7 0
3 years ago
I need help plz and thank you❤
anzhelika [568]
I think:
In motion- 40
Not moving- 20
6 0
3 years ago
Which of these will always produce a magnetic field?
vovikov84 [41]

Answer:

Technically everything has somewhat of a magnetic field. I guess

7 0
3 years ago
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead, the pipe's diameter is 57.3 c
Mashcka [7]

Answer with Explanation:

We are given that

Diameter of pipe,d_1=0.573 m

v_1=13.5 m/s

v_2=5.83 m/s

Volume flow rate of the petroleum along the pipe=Q_{refinery}=A_1v_1=v_(\frac{\pi d^2_1}{4})

Q_{refinery}=13.5\times (\pi\times \frac{0.573)^2}{4})=3.48 m^3/s

By equation of continuity

A_1v_1=A_2v_2

\frac{\pi d^2_1}{4}v_1=\frac{\pi d^2_2}{4}v_2

d^2_2=\frac{v_1}{v_2}d^2_1

d_2=\sqrt{\frac{v_1}{v_2}}d_1

d_2=0.573\sqrt{\frac{13.5}{5.83}}

d_2=0.87 m

d_2=0.87\time 100=87 cm

1 m=100 cm

4 0
3 years ago
Why can’t a real machine ever have 100% efficiency
Harman [31]

Answer:

Almost all machines require energy to offset the effects of gravity, friction, and air/wind resistance. Thus, no machine can continually operate at 100 percent efficiency.

4 0
3 years ago
Other questions:
  • You compress a spring by a certain distance. then you decide to compress it further so that its elastic potential energy increas
    11·1 answer
  • Who are a congressional representative's Constituents
    5·1 answer
  • Describe the action and reaction force pairs involved when an object falls toward earth
    15·1 answer
  • A group of students use a scale to measure the mass of an object. Which of the following would be the appropriate base unit of m
    9·1 answer
  • A wheel of diameter 8.0 cm has a cord of length 6.0 m wound around its periphery. Starting from rest, the wheel is given a const
    11·1 answer
  • What is the measure of the change in velocity during the period of time?
    14·1 answer
  • A space transportation vehicle releases a 470-kg communications satellite while in a circular orbit 350 km above the surface of
    7·1 answer
  • UPVOTE FOR EVERY ANSWER!
    11·1 answer
  • A force of 1 N is equal to which combination of SI units?
    6·1 answer
  • A person sits at rest on a chair. The gravitational force on the person (their weight) is one half of an action-reaction pair. W
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!