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xxTIMURxx [149]
3 years ago
12

PLEASE HELP A car accelerates from rest at 2.92 m/s2 What is the velocity at the end of 5.1 s? Answer in units of m/s. What is t

he displacement after 5.1 s? Answer in units of m.
Physics
1 answer:
uranmaximum [27]3 years ago
6 0

Answer:

first you have to organize the data. a=acceleration t=time v0=inicial velocity vf=final velocity

a=2.92m/s2

t=5.1s

vf=?

v0=0

now the formula you have to use is: vf=vi+a*t (final velocity equals to inicial velocity plus acceleration times time)

Explanation:

i was the best at my class, hope it helped

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While on Mars, two astronauts repeat the pendulum experiment you conducted earlier this term in your physics lab. They go off sc
Levart [38]

Answer:

The constant 0.091 in the astronauts' equation of the best fit line is equal to   \frac{L}{T^2}

The value of  g on Mars is  g = 3.593 \  m/s^2

Explanation:

From the question we are told that

     The line of best fit is defined by the equation  y  = 0.091 x \ and \  R^2 =  1

Now the equation of a straight line is defined as

       y = mx + c

Now comparing the given equation to this we have that

        m =  slope =  0.091

Now from the graph the formula for the slope is  

          m = \frac{L}{T^2}

=>      0.091 =  \frac{L}{T^2}

Now from the question we are told that

        T =  2 \pi \sqrt{\frac{L}{g} }

=>     \frac{g}{4\pi r^2}  =  \frac{L}{T^2} = 0.091

=>     g =  4\pi^2 * 0.091

=>      g = 3.593 \  m/s^2

                                                               

4 0
4 years ago
To be safe, the engineers making the ride want to be sure the normal force does not exceed 1.5 times each persons weight - and t
ANTONII [103]

Answer:

The minimum coefficient of friction is 0.666

Explanation:

Suppose, In a classic carnival ride, patrons stand against the wall in a cylindrical shaped room. Once the room gets spinning fast enough, the floor drops from the bottom of the room! Friction between the walls of the room and the people on the ride make them the “stick” to the wall so they do not slide down. In one ride, the radius of the cylindrical room is R = 7.6 m and the room spins with a frequency of 20.9 revolutions per minute.

Given that,

The normal force does not exceed 1.5 times each persons weight

N=1.5 mg

We need to calculate the minimum coefficient of friction

Using balance equation

\mu N=mg

\mu=\dfrac{mg}{N}

Where, N = normal force

Put the value into the formula

\mu=\dfrac{mg}{1.5 mg}

\mu=\dfrac{1}{1.5}

\mu=0.666

Hence, The minimum coefficient of friction is 0.666

5 0
3 years ago
How can neptune have more mass than uranus but a smaller diameter?
SVEN [57.7K]
Neptunes' average density is larger than that of Uranus. Hope this helps!
5 0
3 years ago
For a certain interval of time, an object is acted on by a constant non-zero force. Which of the following statements is true fo
aleksklad [387]

For a certain interval of time, an object is acted on by a constant non-zero force. For this interval of time . . . . .

A. The object is at rest.  No. From F=ma, if F is not zero, the object can't remain at rest.

<em>B.</em> <em>The object's velocity changes.</em> <em>Yes.</em> From F=ma, if F is not zero, there must be acceleration.

C. The object's velocity can only increase.  No. It might decrease.

D. The object is moving with constant velocity.  No. From F=ma, if F is not zero, there must be acceleration.

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8 0
4 years ago
Read 2 more answers
Technician A says that the HVAC doors in an automatic system are vacuum-operated. Technician B says that the HVAC doors in an au
Gala2k [10]

Option C

Both technicians are correct

<h3><u>Explanation:</u></h3>

HVAC persists for Heating Ventilation and Air Conditioning. Its design in a vehicle is to cleanse, cool, flame, control, and dehumidify the air accessing the cabin, depending on the inputs of the operator as thoroughly as electronic sensors. Various systems will practice diverse ways of regulating airflow into the cabin but all act on identical basic principles.

The automatic systems are electric systems that want different inputs from sensors that intimate climate circumstances to obtain the aspired temperature. Vacuum actuators and/or electric motors control the air doors/valves in these systems.

7 0
3 years ago
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