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allochka39001 [22]
3 years ago
14

A student is standing 8 m from a roaring truck engine that is measured at 20 dB. The student moves 4 m closer to

Physics
1 answer:
Ipatiy [6.2K]3 years ago
5 0

Answer:80 dB

Explanation:

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During exercise, the amount of ____________ carried in the blood to the muscles increases.
ipn [44]
<span>The correct answer is: Oxygen

Explanation:
In order to function properly (movement etc.) during exercise, muscles require oxygen. During exercise, the depth as well as the rate of breathing increase, which in turn increases the amount of oxygen inhaled. In order to expand and contract lungs and for other bodily movements, muscles require oxygen, and for that, more oxygen is carried in the blood to muscles. Hence, the correct answer is Oxygen.</span>
8 0
3 years ago
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Where do buoyant forces act on?
Mademuasel [1]

Answer:

The upward buoyancy force on an object acts through the overall center of buoyancy, being the centroid of the displaced volume of fluid. The weight force on the object acts through its center of gravity.

5 0
3 years ago
100 Points !!!!!!!! I WILL GIVE BRAINLIEST
kumpel [21]

Answer: 1. 0.25 m/s squared

2. A = 0.4 m/s^2

3.=20kg. I did this before.

Explanation:

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3 years ago
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What coefficients would balance the following equation? __C2H6 + __O2 → __CO2 + __H2O A. 1C2H6 + 5O2 → 2CO2 + 3H2O B. 2C2H6 + 5O
sladkih [1.3K]
It's C, with the 2/7/4/6 in front of each reactant and product.
4 0
4 years ago
Example 1: Two physics students, Ben and Bonnie, are in the weightlifting room. Bonnie lifts the 50kg barbell
alexandr402 [8]

Answer:

Same

Ben.

Explanation:

m = Mass Bonnie and Ben lift = 50 kg

s = Displacement of mass by both the students = 0.6 m

Work done by both the student is

W=Fs\\\Rightarrow W=10\times 50\times 0.6\\\Rightarrow W=300\ \text{J}

The amount of work done by both the students will be equal to 300 J.

t_1 = Time taken by Bonnie = 1 minute = 60 seconds

t_2 = Time taken by Ben = 10 seconds.

Power delivered by Bonnie

P=\dfrac{W}{t_1}\\\Rightarrow P=\dfrac{300}{60}\\\Rightarrow P=5\ \text{W}

Power delivered by Ben

P=\dfrac{W}{t_2}\\\Rightarrow P=\dfrac{300}{10}\\\Rightarrow P=30\ \text{W}

So, power delivered by Ben is more.

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3 years ago
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