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
k0ka [10]
3 years ago
9

The coordinate of a particle in meters is given by x(t)=1 6t- 3.0t , where the time tis in seconds. The

Physics
1 answer:
Reika [66]3 years ago
6 0

Complete question:

The coordinate of a particle in meters is given by x(t)=1 6t- 3.0t³ , where the time tis in seconds. The

particle is momentarily at rest at t is:

Select one:

a. 9.3s

b. 1.3s

C. 0.75s

d.5.3s

e. 7.3s

​

Answer:

b. 1.3 s

Explanation:

Given;

position of the particle, x(t)=1 6t- 3.0t³

when the particle is at rest, the velocity is zero.

velocity = dx/dt

dx /dt = 16 - 9t²

16 - 9t² = 0

9t² = 16

t² = 16 /9

t = √(16 / 9)

t = 4/3

t = 1.3 s

Therefore, the particle is momentarily at rest at t = 1.3 s

You might be interested in
How much water in units of litre can fill a water tank of 1m3 capacity? Explain plx ans me
mash [69]
1000 litres of water can fill a tank of 1m3 capacity because water has a density of 1000kg/m3 and as 1 kg water = 1 liter ,
1000 liter of water can fill a tank of 1m3

5 0
3 years ago
This one question is on fotoeletric effect. Does the kinetic energy of the ejected electrons from metal depends on the intensity
grandymaker [24]
Energy of one photon = kinetic energy of photoelectron + work function energy of metal.
Intensity of radiation is proportional to the number of photons arriving per second
5 0
3 years ago
Last one i promise!!
Delvig [45]

Answer:

B

Explanation:

because when they are in opposite direction we subtract so 10N-10N=0 the second one is in the same direction so we simply add the 2 numbers so 10N+10N=20N the last one is as the same as the first picture we subtract 10N-8N=2N

7 0
2 years ago
There are 120 degrees in a straight angle. true false
mixas84 [53]
That would be false.
Straight angle= 180 degrees
Obtuse angle= Above 90, and lower than 180
Acute angle= Below 90
Hope this helps! (:
6 0
3 years ago
Read 2 more answers
Sally pulls a sledge
Mandarinka [93]
Right i think???????????!
8 0
2 years ago
Other questions:
  • Question 9:<br> All parts thank you !
    15·1 answer
  • Help me to answer my questions please
    14·1 answer
  • An electric motor rotating a workshop grinding wheel at a rate of 151 rev/min is switched off. Assume constant angular decelerat
    13·1 answer
  • The luxury liner Queen Elizabeth 2 has a diesel-electric powerplant with a maximum power of 90 MW at a cruising speed of 31.5 kn
    8·1 answer
  • How many miles between a point 60 ° north latitude and 30 ° west longitude and a point 60 ° north latitude and 60 ° east longitu
    11·2 answers
  • Which statement best describes a scientific law?
    5·1 answer
  • Which statements describe magnetic poles? Check all that apply.
    10·2 answers
  • A popular car stereo has four speakers, each rated at 60 W. In answering the following questions, assume that the speakers produ
    11·1 answer
  • 4. A steel rod is 5 cm x 5 cm x 120 cm. If steel has a density of 7.80 g/cm', what is the
    6·1 answer
  • A container of gas is held at a constant volume. Which will most likely happen to the temperature if the pressure of the gas inc
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!