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3 years ago

A psychological condition that can lead to poor sleep is __________.

Physics

1 answer:

Maksim231197 [3]3 years ago

3 0

Insomnia is a condition in which the person with it has difficulty sleeping

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Venn diagrams are used for comparing and contrasting topics. The overlapping sections show characteristics that the topics have

tangare [24]

Answer:

Carry energy and follow a pattern

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3 years ago

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A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus

uranmaximum [27]

Answer:

The external stimulus of fear.

Explanation:

The zebras would most likely be scared of the lions, due to the fact that the lions want to eat the zebra. Thus leading to the zebra's running away from the lions.

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3 years ago

Meteorite On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, creating a dent about 22 cm deep. If the initi

Rom4ik [11]

Answer:

8427375 N

Explanation:

From newton's equation of motion,

F = ma................. Equation 1

Where F = average force exerted on the meteorite by the car, m = mass of the meteorite, a = acceleration.

We can find the value of acceleration from newton's equation of motion

using,

v² = u²+2as.................. Equation 2

Where v = final velocity, u = initial velocity, a = acceleration, s = distance.

Make a the subject of the equation

a = (v²-u²)/2s............... Equation 3

Note: When the meteorite struck the car, it was brought to rest

Given: u = 550 m/s, v = 0 m/s ( brought to rest), s = 22 cm = 0.22 m

Substitute into equation 3

a = (0²-550²)/(2×0.22)

a = -302500/0.44

a = -687500 m/s²

Also given: m = 27 pound = (27×0.454) = 12.258 kg

Substitute into equation 1

F = 12.258(-687500)

F = -8427375 N

Note: The negative sign tells that the force act in opposite direction to the motion of the meteorite

8 0

3 years ago

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An asteroid exerts a 360-N gravitational force on a nearby spacecraft. If the spacecraft moves to a position three times as far

KIM [24]

Answer:

40 N

Explanation:

The gravitational force between the asteroid and the spaceship is given by:

$F=G\frac{mM}{R^2}$

where

$G=6.67\cdot 10^{-11} m^3 kg^{-1} s^{-2}$ is the gravitational constant

$M$ is the mass of the asteroid

$m$ is the mass of the spaceship

$R$ is the distance between the asteroid and the spaceship

The initial force is equal to:

$F=G\frac{mM}{R^2}=360 N$

Later, the spaceship moves to a position 3 times as far from the center of the asteroid, so R' = 3R. Therefore, the new force will be

$F'=G\frac{mM}{R'^2}=G\frac{mM}{(3R)^2}=G\frac{mM}{9R^2}=\frac{1}{9}F$

so, the force is decreased by a factor 9. Since the initial force was F=360 N, the new force will be

$F'=\frac{360 N}{9}=40 N$

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4 years ago

Which materials are good insulators? Select three options. Glass paper gold plastic silver.

valentina_108 [34]

Answer:

Plastic Glass and Paper

Explanation:

i just took the assignment

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2 years ago

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