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dedylja [7]
4 years ago
12

I need help on question 5

Physics
1 answer:
11Alexandr11 [23.1K]4 years ago
3 0
Weathering, erosion, impact, pressure  
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How long does it take a wave to travel 1200 meters with the speed of 3 X 108m/sec?
Vladimir79 [104]
Around 3.70 seconds unless traveling through media

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3 years ago
A person jogs for 4.0 km in 32 mins,then 2.0km in 22mins,and finallu 1.0 km in 16 mins.whqt is the joggers average speed in km p
blondinia [14]

Average speed = (total distance covered) / (time to cover the distance)

total distance covered = (4km + 2km + 1km) = 7 km

time to cover the distance = (32min + 22min + 16min) = 70 min

Average speed = (7 km) / (70 min)

Average speed = 0.1 km/minute

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3 years ago
When Woods hits a 0.04593 kg golf ball, the golf ball is usually traveling around 281 kilometers per hour. What average force do
Semenov [28]

Answer:

128.9 N

Explanation:

The force exerted on the golf ball is equal to the rate of change of momentum of the ball, so we can write:

F=\frac{\Delta p}{\Delta t}

where

F is the force

\Delta p is the change in momentum

\Delta t=0.030 s is the time interval

The change in momentum can be written as

\Delta p = m(v-u)

where

m = 0.04593 kg is the mass of the ball

u = 0 is the initial velocity of the ball

v=281 km/h =78.1 m/s is the final velocity of the ball

Substituting into the original equation, we find the force exerted on the golf ball:

F=\frac{m(v-u)}{\Delta t}=\frac{(0.04593)(78.1-0)}{0.030}=128.9 N

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3 years ago
Which formula is used to find an object’s acceleration?
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Answer:

Δv/Δt

Explanation:

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A 20×10⁹charge is moved between two points A andB that are 30mm apart and have an electric potential difference of 600v between
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