3 years ago

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Physics

2 answers:

Andrew [12]3 years ago

7 0

Answer:

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AAHHH YES THEY DOO AAAHHH EEHSFJWEHASAAAAHJEHER

kenny6666 [7]3 years ago

7 0

Answer:

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How long will it take a running horse to travel 260 m and attain a speed at 12 m/s from rest?

Greeley [361]

Answer:

Explanation:

s=vt

t=s/v

s=260 m

v=vf-vi=12-0=12 m/s

therefore

t=260/12=21.67 sec

8 0

3 years ago

You need to know the height of a tower, but darkness obscures the ceiling. You note that a pendulum extending from the ceiling a

larisa86 [58]

Answer:

120 m

Explanation:

We can calculate the period of a pendulum using the following expression.

$T=2\pi \sqrt{\frac{L}{g} }$

where,

T is the period of the pendulum

L is the length of the pendulum (here it coincides with the height of the tower)

g is the gravity

$T=2\pi \sqrt{\frac{L}{g} }\\L=(\frac{T}{2\pi } )^{2} g=(\frac{22s}{2\pi} )^{2} .9.81m/s^{2} =120m$

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3 years ago

An object applies 300N force on an area of 400cm2

miss Akunina [59]

Answer:

750 Pascal

Explanation:

To find pressure

we have to divide

Force/ Area

300/0.4m2

Answer is 750Pa

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3 years ago

Which is an example of a compound machine?

nydimaria [60]

Answer:

A bicycle.

Explanation:

A compound machine is a machine consisting of multiple simple machines.

A bicycle contains 3 simple machines. A lever, pulley, and wheel-and-axle.

all other choices are simple machines.

Hope this helps!

-MoCKEry

7 0

3 years ago

Read 2 more answers

A current of 1 mA flows through a copper wire. How many electrons will pass a point in each second?

MaRussiya [10]

Answer:

A current of 1ma flows through a copper wire, how many electron will pass a given point in one second? 1 Coulomb = 6.24 x 10^18 electrons (or protons)/1Sec which is also equal to 1 Amp/1 Sec. 1mA is 1/1000th of 1A so only 1/1000th of 6.24 x 10^18 electrons will pass a given point in 1 Sec.

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3 years ago