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
gavmur [86]
2 years ago
9

a) CALCULATE the acceleration of a 300,000 kg jumbo jet, just before takeoff when the thrust of each of its 4 engines is 36,000

N. If the jumbo jet take off speed is 184 mph, b) CONVERT 184 mph to m/s and c) DETERMINE how many seconds would it take for the plane to reach this speed? Show your work and round your answer to the nearest hundredth
Physics
1 answer:
Zanzabum2 years ago
5 0

Answer:

a) 0.12m/s^2

b)0.0511m/s

c)0.4258 seconds

Explanation:

a)

acceleration=  \frac{36000}{300000}

= 0.12m/s^2

b) 184m/h

184/3600 = 0.0511m/s

c)

time =  \frac{0.0511}{0.12}

Time = 0.4258 seconds

You might be interested in
an 1150kg elevator moving down speeds up at a rate of 3.5m/s. what is the tension in the supporting cables?
gtnhenbr [62]

Answer:

The tension force in the supporting cables is 7245N

Explanation:

There are two forces acting on the elevator: the force of gravity pointing down (+) with magnitude (elevator mass) x (gravitational acceleration), and the tension force of the cable pointing up (-) with an unknown magnitude F. The net force is the sum of these forces:

F_{net} = F_g - F = m\cdot g - F\\

We are given the resulting acceleration along with the mass, i.e., we know the net force, allowing us to solve for F:

1150kg\cdot 3.5\frac{m}{s^2}= 1150kg \cdot 9.8\frac{m}{s^2}-F\\\implies F = 1150kg\cdot(9.8-3.5)\frac{m}{s^2}= 7245N

The tension force F in the supporting cables is 7245N


3 0
3 years ago
The winning time for a 500.0 mile circular race track was 3 hours and
lyudmila [28]

Explanation:

We have,

Distance traveled in a circular track is 500 miles

The winning time was 3 hours and  13 minutes. It means time is 3.217 hours.

The driver's average speed is given by total distance divided by total time taken. Its formula can be written as :

v=\dfrac{d}{t}\\\\v=\dfrac{500\ miles}{3.217\ h}\\\\v=155.42\ mph

At the end of the race, the driver reaches the point form where he has started. It means the displacement of the driver is equal to 0. Hence, driver's average velocity is equal to 0.

3 0
3 years ago
A meteorologist plans to release a weather balloon from ground level, to be used for high-altitude atmospheric measurements. The
Slav-nsk [51]

Answer:

563.86 N

Explanation:

We know the buoyant force F = weight of air displaced by the balloon.

F = ρgV where ρ = density of air = 1.29 kg/m³, g = acceleration due to gravity = 9.8 m/s² and V = volume of balloon = 4πr/3 (since it is a sphere) where r = radius of balloon = 2.20 m

So, F = ρgV = ρg4πr³/3

substituting the values of the variables into the equation, we have

F =  1.29 kg/m³ × 9.8 m/s² × 4π × (2.20 m)³/3

= 1691.58 N/3

= 563.86 N

8 0
3 years ago
A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1
AlekseyPX

Explanation:

A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression :

a=a_1+\dfrac{F}{m}

Where

a_1=3\ m/s^2

F=12\ kg-m/s^2

m = 7 kg

So, the correct step for obtaining a common denominator for the two fractions in the expression in solving for a is (a) and the value of a is :

a=3+\dfrac{12}{7}

a=4.71\ m/s^2

Hence, the correct option is (a).

8 0
3 years ago
Does mercury have more protons and electrons than tin
Klio2033 [76]
Yes it does.
On the periodic table, tin is #50 and Mercury is # 80. 
3 0
3 years ago
Other questions:
  • 1 Point
    12·1 answer
  • Atmospheric pressure is reported in a variety of units depending on local meteorological preferences. In many European countries
    9·1 answer
  • The Bugatti Veyron requires 2.40 s to accelerate from 0 to 60.0 mi/h. Calculate the distance that the car would travel in the ti
    11·1 answer
  • Darrel wakes up and notices there are water droplets on his window. He is confused about why there are water droplets because it
    7·1 answer
  • 4. A massless spring hangs from the ceiling, and a mass is hung from the bottom of it. The mass is supported
    5·1 answer
  • An Olympic skier moving at 20.0 m/s down a 30.0o slope encounters a region of wet snow, of
    12·1 answer
  • Which of the following is an example of an immiscible liquid?
    15·2 answers
  • If we have a new moon today, when we will have the next full moon?.
    11·1 answer
  • Why does the moon turn red during a lunar eclipse?.
    7·1 answer
  • Which of the following statements are true of thermal energy and kinetic
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!