3 years ago

Which scenario did not include a chemical change?

Physics

1 answer:

Jobisdone [24]3 years ago

7 0

Answer:

what scenario i dont understand

Explanation:

step by step explenation

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The established value for the speed of light in a vacuum is 299,792,458 m/s. What is the order-of-magnitude of this number?

Rom4ik [11]

The order of magnitude is 10⁸ .

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3 years ago

Whic two types of cells are required during the process of osteogenesis

Mkey [24]

Answer:

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Explanation:

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3 years ago

A child on a swing falls a height of 1m. What speed will the child reach?

kirill [66]

Answer: $v=4.42\ m/s$

Explanation:

Given

Child falls a height of $h=1\ m$

Applying conservation of energy we can write

Loss in Potential energy=Gain in kinetic energy

$mgh=\frac{1}{2}mv^2$

$v=\sqrt{2gh}$

$v=\sqrt{2\times 9.8\times 1}$

$v=\sqrt{19.6}$

$v=4.42\ m/s$

Thus child reaches a velocity of 4.42 m/s

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4 years ago

Why steel ships becomes megnetized as it is constructed

Ksivusya [100]

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4 years ago

Suppose humans have weights which are normally distributed with mean 170 lbs and SD 50 lbs. If 400 humans are selected at random

MrRa [10]

Answer:

$P(x< 175)= 0.9772$

Explanation:

given,

mean weight of human = μ = 170 lbs

standard deviation = SD = 50 lbs

N = 400 humans

By using central limit theorem,

P (x< 175)

$P(x< 175)= P(z$

$P (x< 175)= P(z$

using z-table

$P (x< 175)= 0.9772$

hence, the probability that total weight is less tan 175 lbs is equal to

$P(x< 175)= 0.9772$

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3 years ago