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2 years ago

10

Forces affect motions in living and nonliving things. In a human, swallowed food moves down the esophagus into the stomach, even

if the human is upside down doing a handstand. Which force moves food through the esophagus into the stomach?

1 answer:

valina [46]2 years ago

4 0

Answer:

figured it out its d the last one

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A bowl contains 4 red balls and 2 green balls. Two balls are selected simultanesouly and at random. What is the conditional prob

AlladinOne [14]

Answer:0.6

Explanation:

Given

Bowl contains 4 red and 2 Green balls

Probability of selecting two red balls given atleast one of the ball is red + Probability of selecting two red balls given that no ball is red =1

Probability of selecting two red balls given that no ball is red $=\frac{Probability \ of\ selecting\ two\ red\ balls\ out\ of\ 4\ balls}{probability\ of\ selecting\ 2\ balls\ out\ of\ 6 balls}$

$P=\frac{^{4}C_2}{^{6}C_2}$

$P=\frac{2}{5}$

Required Probability $=1-\frac{2}{5}=\frac{3}{5}$

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3 years ago

If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum acceleration it can achieve o

Scilla [17]

Answer:

Maximum acceleration will be equal to $3.43m/sec^2$

Explanation:

We have given coefficient of kinetic friction $\mu _k=0.7$

And coefficient of static friction $\mu _s=1$

Acceleration due to gravity $g=9.8m/sec^2$

When truck moves maximum force will be equal to $F=\mu _kmg$

It is given that half of the weight is supported by its drive wheels

So force required $=\frac{\mu _kmg}{2}$

From newtons law maximum acceleration will be equal to $a=\frac{\frac{\mu _kmg}{2}}{m}=\frac{\mu _kg}{2}=\frac{0.7\times 9.8}{2}=3.43m/sec^2$

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3 years ago

The magnetic domains in a non-magnetized piece of iron are characterized by which orientation

mel-nik [20]

The unmagnetized pieces of iron would be randomly pointing to directions, this is true because although influenced with the magnetic domain, the direction of the unmagnetized iron field of attraction is not uniform or does not have preferred direction.

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3 years ago

1) Think of planting a tree. You dig the hole, put it in, and fill it back in. Next,

pogonyaev

Answer:

at the top of the tree I hope it will help you please follow me

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2 years ago

Dave's sister gets very stressed out during final exam time; however, Dave isn't affected by the stress. What does this illustra

dmitriy555 [2]

The answer is b personal stress

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2 years ago