3 years ago

Describe this picture in 5 words

Physics

2 answers:

PilotLPTM [1.2K]3 years ago

7 0

Answer:

heathy, people, apple, motivational, together

Explanation:

lesantik [10]3 years ago

3 0

Happy excited fun positive great

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Calculate the work done by a 47 n force pushing a 0.025 kg pencil 0.25 m against a force of 23.

inna [77]

Fnet=fa-fr
=47-23
=24n
W=F∆Xcos°
=24n×0.025cos0
=0.6J

8 0

3 years ago

The process of gathering information through the senses is called what?

rodikova [14]

The answer is observation

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3 years ago

What average net force is required to stop a 3.5 kg bowling ball initially travelling at a speed of 1.5 m/s over a distance of 0

raketka [301]

First the aceleration:

Vf² = Vo² - 2ad

a = (Vf² - Vo²) / 2d

a = (0 m/s)² - (1,5 m/s)²) / 2 * 0,4 m

a = -2,25 m²/s² / 0,8 m

a = -2,81 m/s²

Now, for the net force, use 2nd law of Newton:

F = ma

F = 3,5 kg * (-2,81 m/s²)

F = -9,835 N

The force for stop the bowling ball is <u>-9,835 Newtons.</u>

7 0

3 years ago

Two pulleys are fastened together to form an integral unit. At a certain instant, the indicated belt tensions act on the unit an

tresset_1 [31]

Answer:

α = $21.6 rad/s^2$

Explanation:

Applying the equations of motion to determine angular acceleration of the unit,

The sum of moments about O is equal to the product of angular acceleration and moment of inertia

∑Mo = Io*α

Taking the anticlockwise direction as positive moment,

= ( -(1150) + (1400) ) * (0.5 / 2) + ( (475) - (650) ) * (0.3 / 2) - F = Io*α

= 36.5 - (2.5 N.m) = $(m*ko^2)$ *α

NOTE: moment of inertia of the pulleys in this instance = $(m*ko^2)$

Hence, 33.75 = $25 * (0.25)^2$ * α

Solving, α = $21.6 rad/s^2$

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3 years ago

The parallax method of measuring star distances gives most accurate results when the gap between two observations of a star is a

EleoNora [17]

<span>b. It ensures that measurements are taken from two points
that are very far apart.

Measurements taken six months apart are the farthest apart
that an astronomer can ever get ... they're on opposite sides
of the Earth's orbit !</span>

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3 years ago

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Describe this picture in 5 words ​

Describe this picture in 5 words