Ask question

Ask question

All categories

3 years ago

8

A 2800 kg speedboat starting from rest attains a speed of 16 m/s in 8.0 s as a combination of 1200 N of air resistance and water

drag act on the boat. How much power is being expended by speedboat at the maximum speed?

1 answer:

denis23 [38]3 years ago

6 0

Answer:

For me

Explanation:

power=workdone/time

power= 128×1200/8

power=19200

You might be interested in

A space station, in the form of a wheel 140 m in diameter, rotates to provide an "artificial gravity" of 3.90 m/s2 for persons w

Zigmanuir [339]

Radial acceleration is given by

$a_{rad}= \frac{v^2}{r}$
where

$v=r \omega$
then

$a_{rad}= \frac{r^2 \omega^2}{r}=r\omega^2$

Now

$70\omega^2=3.90 \frac{m}{s^2} \\ \\ \omega= \sqrt{ \frac{3.9}{70} }$

Using the relation

$\omega=2 \pi f$

$2 \pi f= \sqrt{ \frac{3.9}{70} }\\ \\ f= \frac{1}{2 \pi}\sqrt{ \frac{3.9}{70} }Hz$

Putting into rpm

$\frac{60}{2 \pi}\sqrt{ \frac{3.9}{70}} =2.254rpm$

8 0

4 years ago

At the center of the sun, fusion converts hydrogen into

dimaraw [331]

<span>At the center of the sun, fusion converts hydrogen into helium, neutrinos and another thing that I forgot =/</span>

3 0

3 years ago

What Are domains in magnetism

masya89 [10]

Groups of atoms that line up to makes something magnetic

3 0

3 years ago

What is the main reason for using a data table for collecting data?

Luba_88 [7]

Answer:

to make calculation more easy to get

Explanation:

if you are using chart or calculate Thermodynamic problems you will not never solve this problem with out using data table for thermodynamic

7 0

3 years ago

A black stone was discovered to have magnetic properties.

Jobisdone [24]

Answer:

a) this stone was first called Schorl stone

b)the first modern name for this mineral was Black tourmaline

Explanation:

hope this helps you!

:)

5 0

3 years ago