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2 years ago

7

Use the following statements to determine if the disjunction is true or false. p: 7 is an odd number q: 3 is the square root of

9 is p q true or false? true false

1 answer:

kotykmax [81]2 years ago

3 0

P and q are both true

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Why does water frozen in the cracks of a rock help to break down the rock? a) Water expands when frozen and chemically forces th

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Answer: B. water frozen in the cracks of a rock help to break down the rock because water expands when frozen, and physically forces the rock apart

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2 years ago

Recall that if a line is parallel to the vector v and passes through the point P0, which is the tip of the position vector r0, t

Elenna [48]

Answer:

The vector equation of the line is

$\overrightarrow{r}=+t$

Parametric equations for given line are

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Explanation:

The vector equation of the line is given by

$r(t) = r_{o} + tv$

r₀ = (7, -8, 3)

v = (1, 6, -13)

At these points the vector equation for this line is:

$\overrightarrow{r}=\overrightarrow{r_{o}}+t\overrightarrow{v}\\\overrightarrow{r}=+t$

Parametric equations for given line are

$x=7+t\\y=-8+6t\\z=3-13t$

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2 years ago

Which statement accurately describes quantum mechanics and nanotechnology?

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Answer:

Explanation:

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2 years ago

Which of the following describes the efficiency of real machines?

Leokris [45]

Choice-B is the true one.

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3 years ago

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A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)? Round your ans

morpeh [17]

Answer:

1225 J

Explanation:

The Gravitational potential energy (PEG) gained by a mass lifted above the ground is given by

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where

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h is the height at which the object has been lifted

In this problem, we have

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h = 0.5 m

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2 years ago

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