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3 years ago

In the activation–synthesis model of dreaming, what is synthesized?

Physics

1 answer:

astra-53 [7]3 years ago

6 0

Answer:

hopefully that helps

Explanation:

B. a hodgepodge of memories and sensations that are internally generated by the brain

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A block is pulled across a flat surface at a constant speed using a force of 50 newtons at an angle of 60 degrees above the hori

vladimir2022 [97]

The magnitude of the friction force is 25 N

Explanation:

To solve this problem, we just have to analyze the forces acting on the block along the horizontal direction. We have:

The horizontal component of the pulling force, $F cos \theta$ , where F = 50 N is the magnitude and $\theta=60^{\circ}$ is the angle between the direction of the force and the horizontal; this force acts in the forward direction
The force of friction, $F_f$ , acting in the backward direction

According to Newton's second law, the net force acting on the block in the horizontal direction must be equal to the product between the mass of the block and its acceleration:

$\sum F_x = ma_x$

where

m is the mass of the block

$a_x$ is the horizontal acceleration

However, the block is moving at constant speed, so the acceleration is zero:

$a_x = 0$

So the equation becomes

$\sum F_x = 0$ (1)

The net force here is given by

$\sum F_x = F cos \theta - F_f$ (2)

And so, by combining (1) and (2), we find the magnitude of the friction force:

$F cos \theta - F_f = 0\\F_f = F cos \theta = (50)(cos 60^{\circ})=25 N$

Learn more about force of friction:

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4 0

3 years ago

A parachutist falls 50.0 m without friction. When the parachute opens, he slows down at a rate of 27 m/s^2. If he reaches the gr

lora16 [44]

Answer:

3.83 s

Explanation:

Initially for 50 m A falls with acceleration equal to g ie 9.8 m /s².In this journey his initial velocity u = 0 , a = 9.8 , v = ? , t = ?

h = ut + 1/ 2 g t²

50 = .5 x 9.8x t²

t = 3.19 s

v = u +gt

= o + 9.8 x 3.19

= 31.26 m /s

For motion under deceleration

initial speed u = 31.26 m/s

Final speed v = 14 m/s

deceleration a = - 27 m/s²

v = u - at

14 = 31.26 - 27 t

t = 0.64 s

So total time in the air

= 3.19 + .64 = 3.83 s

4 0

4 years ago

A filter filled with liquid is in the shape of a vertex-down cone with a height of 66 inches and a diameter of 44 inches at its

AysviL [449]

I really don’t know but look it up on the site chef.com

5 0

3 years ago

From t=0 onwards what happens to the voltage across the inductor annd the curreent through the inductor relative to their values

gregori [183]

From t=0 onwards I changes slowly and V changes abruptly across the inductor.

At time t=0, the voltage across the inductor equalises the battery voltage; nevertheless, Lenz's Law states that this induced EMF will always be opposed to the polarity of the battery. The voltage across the inductor is equivalent to the voltage of a battery because the inductor at time zero behaves like a second battery of the same voltage linked in reverse.

Because current can never be zero, voltage across the inductor decreases with time. If it did, there would be no back EMF to stop the current from flowing through the inductor because the magnetic field would not be changing. As a result, the inductor will become less of an open circuit as the current increases over time. The inductor will essentially behave like a resistor.

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3 0

2 years ago

Answer the questions to help you understand your parachute and forces experiment. Use the data table below to record your data.

katen-ka-za [31]

Ohh so hexagon is. Tool use the data

7 0

3 years ago