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
asambeis [7]
3 years ago
8

An airplane, starting at rest, takes off on a 600. m long runway accelerating at a rate of 12 m/s/s. How many seconds does it ta

ke to reach the end of the runway?
Physics
1 answer:
choli [55]3 years ago
6 0

<em>x</em> = 1/2 <em>at</em>²

where <em>x</em> = length of runway, <em>a</em> = acceleration, and <em>t</em> = time.

600 m = 1/2 (12 m/s²) <em>t</em>²

<em>t</em>² = (1200 m) / (12 m/s²)

<em>t</em>² = 100 s²

<em>t</em> = 10 s

You might be interested in
Lolz plz help me with this it’s due soon
White raven [17]

Answer:

Explanation:

c slowing down since the distance is going down and the time is moving up.

7 0
3 years ago
A 432 g sample of 60/27Co has a decay constant of 4.14 x 10-9 s-1. How long will it take before only 1/3 of the original sample
Musya8 [376]

Answer:

remain 1s60

Explanation:

I took away sample

7 0
3 years ago
A spring with spring constant 15 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is
olga nikolaevna [1]

Explanation:

It is given that,

Spring constant of the spring, k = 15 N/m

Amplitude of the oscillation, A = 7.5 cm = 0.075 m

Number of oscillations, N = 31

Time, t = 15 s

(a) Let m is the mass of the ball. The frequency of oscillation of the spring is given by :

f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

Total number of oscillation per unit time is called frequency of oscillation. Here, f=\dfrac{31}{15}=2.06\ Hz

m=\dfrac{k}{4\pi^2f^2}

m=\dfrac{15}{4\pi^2\times 2.06^2}

m = 0.0895 kg

or

m = 89 g

(b) The maximum speed of the ball that is given by :

v_{max}=A\times \omega

v_{max}=A\times 2\pi f

v_{max}=0.075\times 2\pi \times 2.06

v_{max}=0.970\ m/s

v_{max}=97\ cm/s

Hence, this is the required solution.

5 0
3 years ago
a wall switch is connected to a wall outlet. A lamp is plugged into the same outlet. You turn the switch on, but the lamp stays
jolli1 [7]
1:   only half  the outlet is switched  and the lamp is in the  other half
2:  the lamp is turned off.
3:   The  light bulb  is burned out
4:  the switch might be broken
5:   the fuse   might be blown
6: the electricity might be off
5 0
3 years ago
A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the stri
san4es73 [151]

Answer:

T = 8.55 N

Explanation:

When string makes an angle 40 degree with the vertical then it will have two forces on it

1) gravitational force (mg)

2) Tension force in string (T)

now we know that net force towards the center of the path is known as centripetal force and it is given as

T - mg cos40 = F_c

T - (0.40\times 9.8)cos40 = \frac{mv^2}{L}

T = 3 + \frac{0.40\times 5^2}{1.8}

T = 3 + 5.55

T = 8.55 N

6 0
3 years ago
Other questions:
  • This subject is MUSIC, but there is no MUSIC subject to pick in the "pick a subject " bar, so I just picked a random one...Sorry
    7·1 answer
  • A searchlight is 210 ft from a straight wall. As the beam moves along the​ wall, the angle between the beam and the perpendicula
    7·1 answer
  • B. You are approaching a stoplight moving with a velocity of 42.0 m/s. The light turns
    5·2 answers
  • An arrow, starting from rest, leaves the bow with a speed of25
    9·1 answer
  • 124.5 kilometers equals how many meters?​
    14·1 answer
  • Cylinder A is moving downward with a velocity of 3 m/s when the brake is suddenly applied to the drum. Knowing that the cylinder
    14·1 answer
  • Definition of graph?
    11·1 answer
  • A horizontal aquifer is overlain by 73.5 ft of water-saturated clay with a porosity of 0.4. The solid density of the clay partic
    11·1 answer
  • By what factor will the acceleration due to gravity change if the mass of a planet is doubled and the size of the planet is also
    13·1 answer
  • A graph titled velocity versus time has horizontal axis time (seconds) and vertical axis velocity (meters per second). A line ru
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!