All categories

3 years ago

4. A tankful of liquid has a volumeof 0.2m3. What is the volume in (a)lities (b) cm3 (c)ml

Physics

1 answer:

yan [13]3 years ago

5 0

Explanation:

sjaaqqjajkslxxjxn vbnvisowpsjsndncnmcnvngieoowpwisnxxnnccnnckfkdkdjcncjcmdmcmcmdmcmdmdmcmcmcdjqowieurisosksjsjsosoapqpskdj

You might be interested in

What is the speed of a person that walk 400 meters in 1900 seconds

Nezavi [6.7K]

Answer:

Explanation:

6 0

3 years ago

Find the moment of force of 60 Newton about an axis of rotation at distance 20 cm from the force

777dan777 [17]

Answer:

10 N.m

Explanation:

Force * Perpendicular distance.

= 20 N * 0.5 m

= 10 N.m

8 0

2 years ago

5. A helicopter scoops a load of water out of a lake, to dump on a forest fire. The helicopter exerts 6480

Strike441 [17]

Answer:

h = 250 m

Explanation:

Given that,

The helicopter exerts 6480 N of force on the water while rising high enough to fly over a mountain.

The helicopter does $1.62\times 10^6\ J$ of work on the water lifting it.

We need to find how high does it lift the water. Work done is given by :

$W=Fh\\\\h=\dfrac{W}{F}\\\\h=\dfrac{1.62\times 10^6}{6480}\\\\h=250\ m$

So, it can lift the water to a height of 250 m.

6 0

2 years ago

You are part of a design team assigned the task of making an electronic oscillator that will be the timing mechanism of a micro-

Snowcat [4.5K]

Solution :

We assume that there is a ring having a charge +Q and radius r. Electric field due to the ring at a point P on the axis is given by :

$E_P=\int dE \cos$

$E_P=\int \frac{KdQ}{(\sqrt{r^2+x^2})^2}\times \frac{x}{\sqrt{r^2+x^2}}$

$\vec{E_P}=\frac{Kx}{r^2+x^2} \int dQ$

$\vec{E_P}=\frac{KxQ}{(r^2+x^2)^{3/2}} \hat{i}$

If we put an electron on point P, then force on point e is :

$\vec{F}=-|e|\vec{E_P}$

$F= \frac{-eKQx}{(r^2+x^2)^{3/2}}= \frac{-eKQx}{r^3[1+\frac{x^2}{r^2}]^{3/2}}$

If r >> x , then $\frac{x^2}{r^2} \approx 0$

Then, $\frac{-eKQ}{r^3}x$

$ma =\frac{-eKQ}{r^3}x$

$a =\frac{-eKQ}{mr^3}x$

Compare, a = -ω²x

We get,

$\omega^2 = \frac{eKQ}{R^3m}$

$\omega = \sqrt{\frac{eKQ}{r^3m}}$

$2 \pi f = \sqrt{\frac{eKQ}{r^3m}}$

$f = \frac{1}{2 \pi}\sqrt{\frac{eKQ}{mr^3}}$

6 0

2 years ago

You are standing next to a table and looking down on a record player sitting on the table. Take the spindle (axis of rotation) t

VLD [36.1K]

Answer:

a) the rotational speed of the clay is 3.45 rad/s

b) the value of A in the equation of motion is 0.15 m

c) the value of ϕi is 90° or π/2 rad.

Explanation:

Given that;

Revolution per minute rpm = 33( 1/3) = 100/3

The frequency f = 100 / 3(60) = 0.55 Hz

Rotational speed W = 2πf

we substitute

W = 2π × 0.55

W = 3.45 rad/s

Therefore, the rotational speed of the clay is 3.45 rad/s

given equation; y(t)=Asin(ωt+ϕi)

given that radius = 0.15 m

y(t)=(0.2)sin(ωt+ϕi)

Therefore, the value of A in the equation of motion is 0.15 m

since y(t) has the maximum value at t =0

so at t=0

y(0) = (0.15)sin(ω(0)+ϕi)

= 0.15sin(ϕi)

this will give maximum value when ϕi = 90°

y(0) = (0.15)sin(ω(0)+ϕi)

= 0.15sin(90°)

= 0.15

hence, the value of ϕi is 90° or π/2 rad.

7 0

2 years ago

4. A tankful of liquid has a volumeof 0.2m3. What is the volume in (a)lities (b) cm3 (c)ml​

4. A tankful of liquid has a volumeof 0.2m3. What is the volume in (a)lities (b) cm3 (c)ml