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
denpristay [2]
3 years ago
6

A roller coaster car is going over the top of a 15-m-radius circular rise. The passenger in the roller coaster has a true weight

of 600 N (therefore a mass of 61.2 kg). At the top of the hill, the passengers "feel light," with an apparent weight of only 360 N. How fast is the coaster moving
Physics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer:

v = 7.67 m/s

Explanation:

The equation for apparent weight in the situation of weightlessness is given as:

Apparent Weight = m(g - a)

where,

Apparent Weight = 360 N

m = mass passenger = 61.2 kg

a = acceleration of roller coaster

g = acceleration due to gravity = 9.8 m/s²

Therefore,

360 N = (61.2 kg)(9.8 m/s² - a)

9.8 m/s² - a = 360 N/61.2 kg

a = 9.8 m/s² - 5.88 m/s²

a = 3.92 m/s²

Since, this acceleration is due to the change in direction of velocity on a circular path. Therefore, it can b represented by centripetal acceleration and its formula is given as:

a = v²/r

where,

a = centripetal acceleration = 3.92 m/s²

v = speed of roller coaster = ?

r = radius of circular rise = 15 m

Therefore,

3.92 m/s² = v²/15 m

v² = (3.92 m.s²)(15 m)

v = √(58.8 m²/s²)

<u>v = 7.67 m/s</u>

You might be interested in
Which of the following is not a reason that coral reefs are important?
Brut [27]
My Answer: They contain a high diversity of organisms.

Hope I helped! :D
3 0
3 years ago
The force supplied by a spring depends on what?
Morgarella [4.7K]
The force and motion
8 0
3 years ago
Two parallel square metal plates that are 1.6 cm apart and 24 cm on each side carry equal but opposite charges uniformly spread
Fiesta28 [93]

The amount of extra electrons present on the negative surface is

57.2 x 10^{10}.

Distance =1.6 cm

Side = 24 cm

Electric field = 18000 N/C

Calculating the capacitance in the metal plates is necessary.

Using the capacitance formula

C=\frac{e_{0}A }{d}

Putting the value

C = 8.85 x 10^{-12}x (24 x 10^{-2})^{2}/1.6 x 10^{-2}

C = 0.318 x 10^{-10} F

<h3>Calculation of potential</h3>

V = Ed

V = 18000 x 1.6 x 10^{-2} V

V = 288 V

<h3>Calculation of charge</h3>

Q = CV

Q = 0.318 x 10^{-10} x 288

Q = 91.54 x 10^{-10} C

Charge on the both the plates

Q = +91.54 x 10^{-10}

Q = - 91.54 x 10^{-10}

Calculation of excess electrons on the negative surface:

n = q/e

n = 91.54 x 10^{-10}/ 1.6 x 10^{-19}

n = 57.2 x 10^{10} electrons

Hence, the number of excess electrons on the negative surface is

57.2 x 10^{10}.

Learn more about capacitance here:

brainly.com/question/14746225

#SPJ4

8 0
1 year ago
A 20 gram bullet exits the rifle at a speed of 985 m/s. The gun barrel is 0.8 m long. What
borishaifa [10]

Answer:

trick question u said bullet and rocket

Explanation:

7 0
2 years ago
How heavy is an object that displaces 400N of water in a pool
matrenka [14]
We can only corelate the object's weight with the amount of water it was able to displaced. 

If the water displaced was around 400N, then the amount of liter displaced is around 400 N (kg*m/s²) / 9.8 m/s² (earth's gravitational pull) which is equals to ~40.81 liters which should be the objects mass as the best assumption (1kg = 1L). As there is no direct link between the water displaced and actual object weight.
3 0
2 years ago
Other questions:
  • A noninverting op-amp circuit with a gain of 96 V/V is found to have a 3-dB frequency of 8 kHz. For a particular system applicat
    9·1 answer
  • A proton, mass 1.67 × 10−27 kg and charge +1.6 × 10−19 c, moves in a circular orbit perpendicular to a uniform magnetic field of
    11·1 answer
  • Both the lens and the cornea of the eye have a primary function of
    8·1 answer
  • What is an non-example of a switch
    8·1 answer
  • You are a visitor aboard the New International Space Station, which is in a circular orbit around the Earth with an orbital spee
    7·2 answers
  • Suppose a scientist conducts a series of experiments and the results are so amazing she wants to share them with other experts i
    13·1 answer
  • B. Interpret Data Solution A has a pH of 1.6.
    11·1 answer
  • PLS ANSWER WITH EXPLANATION OR SOLUTION (WILL GIVE 50 PTS)
    8·1 answer
  • An object that has momentum must have
    14·1 answer
  • Which statement regarding sound traveling in air is correct?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!