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Oxana [17]
3 years ago
6

a tractor pulls a wagon from rest with a constant force of 700 N eventually giving the wagon a speed of 20 km/h. how much work i

s done by the tractor in 3.5 min? whats the tractors power output?
Physics
1 answer:
Semenov [28]3 years ago
5 0


Work = Force × distance

We need to calculate distance travelled.

20km/hr = 20,000m / 60min  → 333.3m/ min

333.3 × 3.5 min = 1,166.6 meters travelled

Force = 700 N  and distance = 1,166.6 m

Work done is  700 N × 1,666.6 =  816,620 Nm

Power output = work /time

Power output is 816, 620 Nm / (3.5 × 60sec) →816, 620 / 210 = 3,888.7

Power output is 3,888.7 Watts.

Power output can also be expressed in joules per second so it is also correct to  say work done is 3,888.7 J/s

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damaskus [11]
The calculation of the centripetal acceleration of an object following a circular path is based on the equation,

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Substituting the known values from the given above,

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3 0
4 years ago
Suppose you have a pendulum clock which keeps correct time on Earth(acceleration due to gravity = 1.6 m/s2). For ever hour inter
kaheart [24]

The moon clock is A) (9.8/1.6)h compared to 1 hour on Earth

Explanation:

The period of a simple pendulum is given by the equation

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

where

L is the length of the pendulum

g is the acceleration of gravity

In this problem, we want to compare the period of the pendulum on Earth with its period on the Moon. The period of the pendulum on Earth is

T_e=2\pi \sqrt{\frac{L}{g_e}}

where

g_e = 9.8 m/s^2 is the acceleration of gravity on Earth

The period of the pendulum on the Moon is

T_m=2\pi \sqrt{\frac{L}{g_m}}

where

g_m = 1.6 m/s^2 is the acceleration of gravity on the Moon

Calculating the ratio of the period on the Moon to the period on the Earth, we find

\frac{T_m}{T_e}=\frac{g_e}{g_m}=\frac{9.8}{1.6}

Therefore, for every hour interval on Earth, the Moon clock will display a time of

A) (9.8/1.6)h

#LearnwithBrainly

6 0
3 years ago
Sometimes my music is played value can feel your body shaking explain what is happening in terms of resonance?
Jet001 [13]

Answer:

If you are standing next to loud music you will feel yourself vibrating because resonance happens. When an object vibrating at or near the resonant frequency of a second object then it causes the second object to vibrate. This phenomenon is called resonance.

Explanation:

Hope this helped! :))

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N76 [4]

Answer:

Explanation:

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3 years ago
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