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
liraira [26]
3 years ago
7

Two points are given in polar coordinates by : (r, θ) = (2.60 m, 50.0°)

Physics
1 answer:
alukav5142 [94]3 years ago
5 0

Answer:

The distance between the 2 points is 4.6558 meters.

Explanation:

The distance between 2 points (r_1,\theta _1),(r_2,\theta _2) is given by

d=\sqrt{r_{1}^{2}+r_{2}^{2}-2r_1\cdot r_2cos(\theta _2-\theta _1)}

In our case the given 2 points are (2.60,50.0^{o}),(3.60,-46.0^{o}) hence the distance is

d=\sqrt{2.60^{2}+3.60^{2}-2\cdot 2.60\cdot 3.60\cdot cos(-46.0-50)}\\\\\therefore d=4.6558m

You might be interested in
with the data for water of β = 3.04x10-4 and α = 4.52x10-5 atm-1 at 30 ° C and 1 atm calculate: (du / dp) t =
yanalaym [24]

jsusjsjjssjsjsjsjsjs

8 0
3 years ago
How much force is required to keep the object moving with the same speed and on the same direction
torisob [31]

Answer:

zero.

You don't need any force to keep an object move with the same speed. It will continue to move along a straight line with a constant speed.

This is exactly the essence of Newton's first law of motion.

4 0
4 years ago
What happens when parallel light waves strike a smooth, polished surface
Roman55 [17]
If your choices are the following:
A. regular absotbtion
B. Diffuse absorbtion
C. Regular reflection
D. diffuse reflection

The result when parallel light waves strike a smooth, polished surface is that it will result to regular reflection.
7 0
3 years ago
Read 2 more answers
A stuntman with a mass of 80.5 kg swings across a moat from a rope that is 11.5 m. At the bottom of the swing the stuntman's spe
wel

Answer:

  • No
  • 5.49 m/s

Explanation:

The net force required to accelerate the stuntman in a circular arc of radius 11.5 m will be ...

  F = mv²/r . . . . where this m is the mass being accelerated, v is the tangential velocity, and r is the radius.

Here, the net force needs to be ...

  F = (80.5 kg)(8.45 m/s)²/(11.5 m) . . . . . where this m is meters

  ≈ 499.8175 kg·m/s² = 499.8 N

Gravity exerts a force on the stuntman of ...

  F = mg = (80.5 kg)(9.8 m/s²) = 788.9 kg·m/s² = 788.9 N

Then the tension required in the rope/vine is ...

  499.8 N+788.9 N= 1288.7 N

This is more than the capacity of the rope, so we do not expect the stuntman to make it across the moat.

_____

The allowed net force for centripetal acceleration is ...

  1000 N -788.9 N = 211.1 N

Then the allowed velocity is ...

  211.1 = 80.5v²/11.5

  30.16 = v² . . . .  multiply by 11.5/80.5

  5.49 = v . . . . . . take the square root

The maximum speed the stuntman can have is 5.49 m/s.

_____

<em>Comment on crossing the moat</em>

The kinetic energy at the bottom of the swing translates to potential energy at the end of the swing. At the lower speed, the stuntman cannot rise as high, so will traverse a shorter arc. At 8.45 m/s, the moat could be about 16.8 m wide; at 5.49 m/s, it can only be about 11.5 m wide.

3 0
4 years ago
If we want to describe work, we must have
kramer

The correct answer is C because why would you want to move the force away from the force. So therefore the answer C because you want to move the force to the force. Hope This Helps

6 0
4 years ago
Read 2 more answers
Other questions:
  • While moving horizontally at 3.5 x 103 m/s at an altitude of 2.0 x 104 m, a ballistic missile explodes and breaks into two fragm
    7·1 answer
  • Read the following scenario and decide if it is a hypothesis, theory or law.
    8·2 answers
  • The mass of an electron is 9.11×10−31 kg. if the de broglie wavelength for an electron in a hydrogen atom is 3.31×10−10 m, how f
    9·1 answer
  • A quarterback throws the football to a stationary receiver who is 16.1 m down the field. the football is thrown at an initial an
    12·1 answer
  • In an oscillating LC circuit, the total stored energy is U and the maximum current in the inductor is I. When the current in the
    11·1 answer
  • The strength of the force of friction depends on which two factors?
    14·2 answers
  • What is the net force acting on the buggy?<br> N<br> The net force is pointing to the...
    15·2 answers
  • Pllssss answer thiss ...<br> its about the reading of VOLTMETER AND AMMETER
    6·1 answer
  • Two people are carrying a uniform 704.0 N log through the forest. Bubba is 2.2 m from one end of the log (x), and his partner is
    6·1 answer
  • 120-v rms voltage at 1000 hz is applied to an inductor, a 2. 00-μf capacitor and a 100-ω resistor. if the rms value of the curre
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!