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
ladessa [460]
3 years ago
11

A motorboat traveling with a current can go 160 km in 4 hours. against the current it takes 5 hours to go the same distance. Fin

d the speed of motorboat and speed of current.
Physics
1 answer:
MatroZZZ [7]3 years ago
3 0
<h2>Speed of motorboat is 36 km/hr and speed of current is 4 km/hr.</h2>

Explanation:

Let speed of motor boat be m and speed of current be c.

A motorboat traveling with a current can go 160 km in 4 hours.

   Distance = 160 km

   Time = 4 hours

    Speed = m + c

   We have

            Distance = Speed x Time

            160 = (m+c) x 4

            m + c = 40     --------------------- eqn 1

Against the current it takes 5 hours to go the same distance.

   Distance = 160 km

   Time = 5 hours

    Speed = m - c

   We have

            Distance = Speed x Time

            160 = (m-c) x 5

            m - c = 32     --------------------- eqn 2

eqn 1 + eqn 2

           2m = 40 + 32

             m = 36 km/hr

Substituting in eqn 1

               36 + c = 40

                      c = 4 km/hr

Speed of motorboat is 36 km/hr and speed of current is 4 km/hr.

You might be interested in
____ is undeniably accepted by scientists all over the world as the primary language of science.
faust18 [17]

Answer:

Latin

Explanation:

In order for the scientists to have a common and official name for a particular thing that can be understood by every scientist in the world, a single language has been established for the purpose. The language chosen is the Latin language. The official scientific names are given in this language, so it is a necessity for the scientists to know and understand this language. The terms that are commonly used are regional, and they come in many different languages, which is why this language has been chosen. Occasionally, the ancient Greek language is used as well, though much less than the Latin.

6 0
3 years ago
Read 2 more answers
A material that transmits nearly all the light in a ray because it offers little resistance to the light is ________.
Nina [5.8K]

Answer:

D. transparent.

Explanation:

A material that transmits nearly all the light in a ray because it offers little resistance to the light is <u>transparent.</u>

A transparent material allows light to pass through them with little or no resistance enabling them see-through. A material that transmits nearly all the light rays that pass through it because it offers little resistance to the light is TRANSPARENT. Examples of transparent materials are water,  glass (flint and crown), air, and diamond.

4 0
3 years ago
E-mail is usually a poor choice for the distribution of sensitive electronic files because
Slav-nsk [51]
D. email is saved on the server that transfers is
6 0
2 years ago
Read 2 more answers
When measurements are close to their true values, they are said to be
katovenus [111]

Answer:

When measurements are close to true

value they are called to be accurate

Explanation:

3 0
2 years ago
Read 2 more answers
Isaac throws an apple straight up from 1.0 m above the ground, reaching a maximum height of 35 meters. Neglecting air resistance
mamaluj [8]
26.2005 m/s will be the velocity of the apple right when it hits the ground and the initial velocity would be 25.8235 m/s

so Vf=26.2005
and Vi=25.8235

the velocity difference is due to the apple having an initial height of 1 meter
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is cosmic background radiation?
    12·2 answers
  • Isabela is an astronomer studying stars A and B. Star A is farther away from Isabela and yet when Isabela observes the stars, th
    13·1 answer
  • Express in words AND mathematically the relationship between period and frequency
    7·2 answers
  • n hydrogen, the transition from level 1 to level 2 has a rest wavelength of 121.6 nm. Suppose you see this line at a wavelength
    7·1 answer
  • Plz help...Thanks.
    6·1 answer
  • A professional racecar driver buys a car that can accelerate at 5.9 m/s2. The racer decides to race against another driver in a
    5·1 answer
  • 6. Which of these contain muscles that are not under the mind's control? (Select all that apply.)
    5·1 answer
  • For this situation to demonstrate a balanced force, how much force must Omar apply? (In the picture, Sam is pushing a box to the
    15·2 answers
  • . The average human walks at a speed of 5 km per hour. If your PE teacher asks you to walk for 30 minutes in
    9·1 answer
  • A 100 Ohm, 200 Ohm, and 400 Ohm resistors are in parallel with each other. What is the equivalent
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!