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
Talja [164]
3 years ago
9

The​ time, t, required to drive a fixed distance varies inversely as the​ speed, r. It takes 3 hr at a speed of 14 ​km/h to driv

e a fixed distance. How long will it take to drive the same distance at a speed of 23 ​km/h?
Physics
1 answer:
kenny6666 [7]3 years ago
4 0

Answer:

time taken with speed 23 km/h will be 1.8 hours or 1 hour 48 minutes

Explanation:

Given:

Time is inversely proportional to the speed

mathematically,

t ∝ (1/r)

let the proportionality constant be 'k'

thus,

t = k/r

therefore, for case 1

time = 3 hr

speed = 14 km/hr

3 = k/14

also,

for case 2

let the time be = t

r = 23 km/h

thus,

we have

t = k/23

on dividing equation 2 by 1

we get

\frac{t}{3}=\frac{k/23}{k/14}

or

t=\frac{14\times3}{23}

or

t = 1.8 hr = or 1 hour 48 minutes ( 0.8 hours × 60 minutes/hour = 48 minutes)

You might be interested in
Example
Vsevolod [243]
I believe I seen on google if you go to Mather
5 0
3 years ago
Which instrument measure the intensity of sound​
professor190 [17]

Answer:

Decibel Meter

A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound.

3 0
3 years ago
Read 2 more answers
Choose all of the true statements regarding the relationship between voltage, resistance, and current. Current is measured in am
wel

-- <u><em>Current is measured in amps.</em></u>  (You can use any symbol you want to represent current, but the most common one is " I ", not "Δ".)

-- <u><em>The relationship between current, voltage, and resistance is mathematically defined by Ohm's Law. </em></u>

-- <u><em>Current is the flow of electrons through a circuit.</em></u>

-- (Ohm's Law is NOT mathematically represented by the equation V=I/R.)  <u><em>It should be V = I · R</em></u> .  

(When solving for Resistance in a circuit and both voltage and current are known values, the equation I =V*R is not true, and not the way to solve it.)  <u><em>If the resistance is what you're looking for, then the equation to use is  </em></u><u><em>R = V / I</em></u><u><em> .  </em></u>

<em>-- </em><u><em>If the voltage in a circuit is increased, the current will also increase.</em></u>

6 0
3 years ago
Read 2 more answers
What is the definition of an unbalanced force?
Shtirlitz [24]
<span>an unbalanced force is Forces that are not equal</span>
3 0
3 years ago
A team of scientists is researching the best way to use tides to produce energy. One team includes environmental
Xelga [282]
Geology because It is the study of processes that shape Earth.
6 0
3 years ago
Read 2 more answers
Other questions:
  • The author s feeling about a subject or topic, which is evidenced in word choice, is called __________. conflict resolution tone
    8·2 answers
  • A person exerts a horizontal force of F=45N on the end of an 86cm wide door. The magnitude of the torque due to F about the pivo
    6·1 answer
  • How does the type of medium affect a sound wave?
    13·1 answer
  • Which of these is generally considered to have been discovered by Einstein?
    13·2 answers
  • I have a set of calipers that can measure thickness of a few inches with an uncertainty of ±0.005 inches. I measure the thicknes
    10·1 answer
  • The quantity represented by vi is a function of time (i.e., is not constant).A. TrueB. False
    11·1 answer
  • A satellite of mass m is in a circular orbit of radius R2 around a spherical planet of radius R1 made of a material with density
    11·1 answer
  • How much electricity is used to boil 600 g of water if the kettle has a power of 1500 W? The water boiled for 3 minutes and 9 se
    13·1 answer
  • A vacuum cleaner has a rating of 460 W on 230 V mains. The value of the fuse connected in the plug will be
    10·1 answer
  • If a = 8i + j - 2k and b = 5i - 3j + k show that a) a x b = -5i - 18j - 29k b) b X a = 50 + 18j +29k​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!