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
How could glacial marks on one continent be similar to glacial marks on another continent far away?
BigorU [14]

Answer:

Plate Tectonics

Explanation:

Plate tectonics is the scientific theory that the continents move around due to due plate tectonics and the movement of magma under the crust. This explains why some fossils of the same kind are found on other continents, and same goes for the Glacial Marks.

6 0
3 years ago
Consider the electric force between a pair of charged particles a certain
Crazy boy [7]

Answer:

Doubled

Explanation:

F = (kq1q2) / r^2

F and q (Either q1 or q2) are directly proportional, so double the charge would also double the electruc force between the charges.

5 0
3 years ago
Select the correct answer.
wolverine [178]
The answer is C in this question.
5 0
3 years ago
Read 2 more answers
A penny rolls along the table for a distance of 1.3 meters. Jackie pushes it 40 centimeters further in the same direction.
brilliants [131]
40 meters times 1 meter over 100 centimeters equals 0.4 meters. 1.3 meters + 40 centimeters =. 1.3 m + 0.4 m = 1.7 m. The answer is 1.7 meters
7 0
3 years ago
Definition: This law states that, in any process, energy is neither created nor destroyed. It can only be
Alika [10]
law of conservation of energy

aka the first law of thermodynamics
5 0
3 years ago
Other questions:
  • Kelly sits on a rock. Her weight is an action force. Describe the reaction force.
    12·2 answers
  • How long will it take them to glide to the edge of the rink?
    12·1 answer
  • A rotating space station is said to create "artificial gravity" - a loosely-defined term used for an acceleration that would be
    9·1 answer
  • A cooling fan is turned off when it is running at 900 rev/min. It turns 1700 revolutions before it comes to a stop.
    13·1 answer
  • 20-kilogram canoe is floating downriver at 2 m/s. what’s the kinetic energy?
    10·2 answers
  • When molecules collide, _________ energy is transferred from one molecule to the next.​
    13·1 answer
  • How many windows should the real tree house have
    14·1 answer
  • How do our attitudes help us organize our reality?
    9·2 answers
  • Does Archimedes principle hold good in a vessel in free fall​
    6·1 answer
  • Force (f) = ?<br> mass (m) = 75kg<br> gravity (g) = 9.8m/s^2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!