Ask question

Ask question

All categories

3 years ago

10

a 70 kg desk sits on the floor motionless If gravity is pulling it with an acceleration of 9.8 m/s/s how much force is gravity e

xercising on the desk

1 answer:

adell [148]3 years ago

3 0

Since force is mass*acceleration,

F = 70kg * 9.8 m/s

You might be interested in

Help pls sand quickly plssssss

tamaranim1 [39]

Answer:

The magnet produces an electric current in the wire

Explanation:

6 0

2 years ago

Read 2 more answers

Cartesian coordinate system is used for?

Svet_ta [14]

Answer:

sorry not sure but i can try help with telling you this...

Explanation:

alls you havs to do is ask the internet and it will tell you

3 0

3 years ago

You have a stopped pipe of adjustable length close to a taut 62.0-cm, 7.25-g wire under a tension of 3910 N . You want to adjust

Ber [7]

Answer:

L = 6 cm

Explanation:

Second overtone of the wire is same as third harmonic

so its frequency is given as

$f = \frac{3}{2L}\sqrt{\frac{T}{\mu}}$

here we know that

$\mu = \frac{M}{L}$

$\mu = \frac{7.25 \times 10^{-3}}{0.62}$

$\mu = 0.0117 kg/m$

now we have

$f = \frac{3}{2\times 0.62}\sqrt{\frac{3910}{0.0117}}$

$f = 1398.6 Hz$

Now fundamental frequency of sound in a pipe is given as

$f = \frac{v}{4L}$

$1398.6 = \frac{340}{4L}$

$L = 0.06 m$

$L = 6 cm$

7 0

2 years ago

If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do the work?

PilotLPTM [1.2K]

225 is the correct answer

5 0

3 years ago

Read 2 more answers

Weight will increase as....

Ganezh [65]

B i believe that is your answer

5 0

3 years ago