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
Elena L [17]
3 years ago
14

For the different values given for the radius of curvature RRR and speed vvv, rank the magnitude of the force of the roller-coas

ter track on the cart at the bottom of each dip. Rank from largest to smallest. To rank items as equivalent, overlap them.
A) R = 60m v = 16 m/s
B) R = 15m v = 8m/s
C) R = 30m v = 4m/s
D) R = 45m v = 4m/s
E) 30m v = 16 m/s
F) R = 15m v =12 m/s
Physics
1 answer:
nirvana33 [79]3 years ago
5 0

Explanation:

The force of the roller-coaster track on the cart at the bottom is given by :

F=\dfrac{mv^2}{R}, m is mass of roller coaster

Case 1.

R = 60 m v = 16 m/s

F=\dfrac{(16)^2m}{60}=4.26m\ N

Case 2.

R = 15 m v = 8 m/s

F=\dfrac{(8)^2m}{15}=4.26m\ N

Case 3.

R = 30 m v = 4 m/s

F=\dfrac{(4)^2m}{30}=0.54m\ N

Case 4.

R = 45 m v = 4 m/s

F=\dfrac{(4)^2m}{45}=0.36m\ N

Case 5.

R = 30 m v = 16 m/s

F=\dfrac{(16)^2m}{30}=8.54m\ N

Case 6.

R = 15 m v =12 m/s

F=\dfrac{(12)^2m}{15}=9.6m\ N

Ranking from largest to smallest is given by :

F>E>A=B>C>D

You might be interested in
A cylindrical, 0.500-m rod has a diameter of 0.02 m. The rod is stretched to a length of 0.501 m by a force of 3000 N. What is t
Salsk061 [2.6K]

Answer:

Y = 4.775 x 10⁹ Pa = 4.775 GPa

Explanation:

First, we calculate the stress on the rod:

stress = \frac{Force}{Area} = \frac{3000\ N}{\pi r^2}  \\\\stress = \frac{3000\ N}{\pi (0.01\ m)^2}\\\\stress = 9.55\ x\ 10^6\ Pa = 9.55 MPa\\

Now, we calculate the strain:

strain = \frac{Change\ in Length}{Original\ Length}\\\\strain = \frac{0.501\ m - 0.5\ m}{0.5\ m}\\\\strain =  0.002\\

Now, we will calculate the Young's Modulus (Y):

Y = \frac{stress}{strain}\\\\Y = \frac{9.55\ x\ 10^6\ Pa}{0.002} \\

<u>Y = 4.775 x 10⁹ Pa = 4.775 GPa</u>

6 0
3 years ago
Calculate the root mean square velocity of nitrogen molecules at 25°c.
umka2103 [35]

Answer:

515.22 m/s

Explanation:

Formula for root mean square velocity is SQRT (3RT/M)

Where,

R = Rydberg's constant = 8.314 Kg. m²/ s². K. mol

T = Temperature in Kelvin

M = Molar mass in Kg/mol

First calculate molar mass,

As nitrogen is diatomic molecule,

Its molar mass is

M = 2(14) = 28 g/mol

Convert unit into Kg/mol

28 g/mol x 1 Kg/1000g = 2.8x10¯² Kg/mol

Convert temperature into kelvin

T = 25 + 273 = 298K

Put all values in formula

Vrms = SQRT (3RT/M)

Vrms = SQRT (3x8.314x298/2.8x10¯²)

Vrms = SQRT (265454. 14)

Vrms = 515.22 m/s

5 0
3 years ago
QUICKLY I AM IN THE LESSON NOWWW
vladimir2022 [97]

Answer:

I don't really know much about the whole stars thing, but I've written a lot of paragraphs in science

Explanation:

Remember:

  • A paragraph should be in CER formation: Claim (hypothesis/discovery), Evidence, and Reasoning
  • Your reasoning should never start with I believe or I think, your reasoning and evidence are 100% fact based
  • The actual hypothesis should only be 1-2 sentences and be straight to the point

Include:

  • for your hypothesis, keywords relating to your subject, I'm assuming  for your topic you should include things like marking, telescope, stars, etc.
  • why you believe your hypothesis is true
  • so use prior knowledge to justify your hypothesis
7 0
3 years ago
The energy in a battery is_____energy
Ulleksa [173]

Answer:

A charged battery that is NOT part of a circuit is an example of potential energy.

7 0
3 years ago
Read 2 more answers
A ball is dropped off of a building and falls past a window that is 2.2m long. If it takes .28s for the ball to cross the window
Doss [256]

Answer:

oh what do you believe this one

8 0
2 years ago
Other questions:
  • A 725.0 o emu egg moving at 8.75 m/s thrown by an obnoxious juvenile is caught by an alert lady. (a) If the time of
    9·1 answer
  • A handwashing sink may be used for: A. Handwashing and Washing Dishes B. Handwashing and Washing Ready-to-Eat Foods C. Handwashi
    12·2 answers
  • While skydiving, your parachute opens and you slow from 50.0 m/s to 8.0 m/s in 0.75 s . Determine the distance you fall while th
    7·1 answer
  • What is Newton’s first law
    10·2 answers
  • For what position of the object will a spherical concave mirror project on the screen an image smaller than the object? a. betwe
    8·1 answer
  • Who was the second man to walk on the moon?
    8·2 answers
  • A 4000 kg satellite is placed 2.60 x 10^6 m above the surface of the Earth.
    11·1 answer
  • Which equation can correctly express the relation between force, acceleration, and mass?
    11·2 answers
  • Find the volume of an object with a density of 3.2 g/mL and a mass of 12 g.
    14·2 answers
  • How much heat is needed to raise the temperature of 50.0 g of water by 25.0°C
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!