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2 years ago

What is cerebellum ?

1 answer:

3 0

The portion of the brain in the back of the head between the cerebrum and the brain stem. The cerebellum controls balance for walking and standing, and other complex motor functions. I hope it helped??

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A 4.0 kilogram train going right at 6.0 meters per second bumps into a toy wagon moving the same direction at 2.0 meters per sec

aliya0001 [1]

Answer: 1.5kg

Explanation:

5 0

3 years ago

When you normally drive the freeway between Sacramento and San Francisco at an average speed of 115 km/hr (71 mi/h ), the trip t

erik [133]

Answer:

It takes 20 minutes and 24 seconds more on Friday than that of normal days.

Explanation:

Given:

Average speed on normal days (s₁) = 115 km/h = 71 mi/h

Time taken on normal days (t₁) = 1 hr and 13 min

Average speed on Friday (s₂) = 90 km/h = 56 mi/h

Time taken on Friday (t₂) = ?

Distance covered is same in both case.

Converting time from minutes to hours using the conversion factor, we have:

1 min = $\frac{1}{60}$ hour

∴ 13 min = $\frac{13}{60}=0.22\ h$

So, $t_1=1\ h+0.22\ h=1.22\ h$

Using the distance formula for both the days, we get:

$d=speed\times time\\\\d=s_1t_1\\d=s_2t_2$

Therefore,

$s_1t_1=s_2t_2\\\\115\ km/h\times 1.22\ h=90\ km/h\times t_2\\\\t_2=\frac{140.3\ km}{90\ km/h}\\\\t_2=1.56\ hrs$

So, time taken on Friday is 1.56 hours.

Time taken on Friday is more and the difference is given as:

Time difference = Time taken on Friday - Time on normal days

Time difference = 1.56 - 1.22 = 0.34 hours

Converting time from hours to minutes using the conversion factor, we have:

1 hour = 60 min

∴ 0.34 hours = 0.34 × 60

= 20.4

= 20 mins + 0.4 mins

= 20 min + (0.4 × 60) = 20 mins + 24 s

So, it takes 20 min and 24 seconds more on Friday than that of normal days.

4 0

3 years ago

An astronaut with mass 84kg is at rest in space, before firing her water pack to move toward the shuttle. If the amount of water

Travka [436]

Answer:

The astronaut is moving at a speed of 0.238 m/s in a direction opposite the direction of the water shot out.

Explanation:

We are given;

Mass of astronaut; m1 = 84 kg

Mass of water shoot out; m2 = 2 kg

Initial speed of astronaut; u1 = 0 m/s

Initial speed of water shoot out; u2 = 0 m/s

Final speed of shoot out; v2 = 10 m/s

From law of conservation of momentum, we can say that;

Initial momentum = final momentum

Thus;

m1•u1 + m2•u2 = m1•v1 + m2•v2

Where v1 is the final speed of the astronaut

Plugging in the relevant values, we get;

(84 × 0) + (2 × 0) = (84 × v1) + (2 × 10)

0 = 84v1 + 20

-20 = 84v1

v1 = -20/84

v1 = -0.238 m/s

The negative sign indicates that the astronaut is moving 0.238 m/s in a direction opposite the direction of the water shot out.

4 0

2 years ago

When electric power plants return used water to a stream, after using it in their steam turbines and condensers, this used water

defon

Answer:

Thermal Pollution

Explanation:

Thermal pollution is a <em>term</em> use to describe the <u>final result caused from the water used as a coolant by power plants and/or industrial companies</u>.<em> It changes the water temperature and its quality. It is usually caused from humans or companies especially manufacturing companies - They use it for their personal needs. The end product of the water after being discarded is Thermal Pollution</em>

6 0

3 years ago

The full range of frequencies of electromagnetic radiation is called

julia-pushkina [17]

<h2>Answer: electromagnetic spectrum </h2>

The electromagnetic spectrum is the set of electromagnetic radiations distributed in their different frequencies or wavelengths, which in turn are related to their energy.

If we go from the smallest wavelengths known up to now (because according to physics the electromagnetic spectrum is infinite and continuous) to the longest, the electromagnetic spectrum covers the following radiations:

Gamma rays, X-rays, ultraviolet, visible light (all the colors we are able to see), infrared, radio waves and microwaves.

Where those with shorter wavelength (or higher frequency) have more energy than those with a longer wavelength.

6 0

3 years ago

What is cerebellum ?​

What is cerebellum ?