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4 years ago

Can someone answer these physics questions

Physics

1 answer:

USPshnik [31]4 years ago

6 0

1. The object moves -25 meters in a period of 3 seconds, so its average velocity is (-25 m)/(3 s) = -25/3 m/s ≈ -8.3 m/s

2. Ms. Patil's average velocity is the displacement over the period divided by the period length: (8 mi)/(0.25 h) = 32 mi/h

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Write the answer in scientific notation, using the wanted unit.

lora16 [44]

Answer:

1.51 x 10^4 kg

Explanation:

(1.26 x 10^4 kg) + (2.5 x 10^6 g)

= 12600 kg + 2500000 g

= 12600 kg + (2500000 g / 1000 )

= 12600 kg + 2500 kg

= 15100 kg

= 1.51 x 10^4 kg

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3 years ago

Short Answer Questions:

Otrada [13]

According to Archimede's principle, a physical object experiences an upthrust due to a difference in pressure between upper and lower surfaces.

<h3>What is an upthrust?</h3>

An upthrust is also referred to as buoyancy and it can be defined as an upward force which is exerted by a fluid (liquid or gas), so as to oppose the weight of a partially or fully immersed physical object that is floating in it.

Based on scientific information, a physical object experiences an upthrust when it is immersed in a fluid due to a difference in height and pressure between upper (top) and lower (bottom) surfaces.

According to Archimede's principle, there is a higher pressure at the bottom of the physical object due to height, and a lower pressure at the top of the physical object.

Read more on upthrust here: brainly.com/question/24389514

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2 years ago

Rules for competitive team sports set which limit?

Tanya [424]

Answer:

the skill level of players

Explanation:

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3 years ago

Read 2 more answers

In a race, a runner traveled 12 meters in 4.0 seconds as she accelerated uniformly from rest. The magnitude of the acceleration

mestny [16]

<span>The runner is moving by uniformly accelerated motion, starting from rest (so, his initial velocity is zero). The law of motion of the runner is
</span> $x(t) = \frac{1}{2} at^2$ <span>
where x(t) is the distance covered after time t, and a is the acceleration of the runner. By re-arranging the formula, we get
</span> $a= \frac{2S}{t^2}$ <span>
We know the runner has covered a distance of S=12m in t=4.0 s, and if we plug these numbers into the equation, we find the acceleration of the runner:
</span> $a= \frac{2S}{t^2} = \frac{(2*12m)}{(4s)^2} =1.5 m/s^2$ <span>
</span>

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3 years ago

Please fill in question 3 (i) fast please science homework

Kitty [74]

The answers are 3.3kWh, 1.2kWh, and 120kWh.

Multiply the amount of kW used per hour by the amount of time it was powered and you receive your answer.

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3 years ago