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3 years ago

7

Why do you think we see the sun moves across the sky? answer it for brainlliest

1 answer:

aalyn [17]3 years ago

7 0

Answer:

From Earth, the Sun looks like it moves across the sky in the daytime and appears to disappear at night. This is because the Earth is spinning towards the east. The Earth spins about its axis, an imaginary line that runs through the middle of the Earth between the North and South poles.

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Corbin, an avid skier leaves the horizontal end of a ramp with a velocity of 33.0 m/s and lands 63.0 m from the base the ramp. H

ahrayia [7]

Answer:

Height of ramp = 17.49 m

Explanation:

We have equation of motion , $s= ut+\frac{1}{2} at^2$ , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

Considering horizontal motion of skier

Initial velocity = 33 m/s, Displacement = 63 m, acceleration = 0 and we need to find time taken to reach ground by the skier.

$63= 33t+\frac{1}{2} *0*t^2\\ \\ t=1.909seconds$

The vertical distance traveled in 1.909 seconds is the height of ramp

Initial velocity = 0 m/s, acceleration = acceleration due to gravity = 9.8 $m/s^2$ , time = 1.909 s and we need to find displacement.

$s= 0*1.909+\frac{1}{2} *9.8*1.909^2\\ \\ s=17.49 m$

So height of ramp = 17.49 m

5 0

3 years ago

Identifying Sources Used to Study Earth's Interie

nevsk [136]

Answer:

Tect book

Explanation:

8 0

4 years ago

((GIVING 40 POINTS AND BRAINLIEST TO CORRECT ANSWER!)) What is shown in the diagram?

NNADVOKAT [17]

Hello!!
The Answer is A! Motor.

Hope this helps ~Nayiah~

5 0

3 years ago

Read 2 more answers

In a lab experiment, two identical gliders on an air track are held together by a piece of string, compressing a spring between

ddd [48]

Answer:

Part a)

$v_2 = -0.300$

Part b)

Here final kinetic energy is more than the initial kinetic energy

This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks

Explanation:

Part a)

As we know that there is no external force on the system of two gliders

So here we can use momentum conservation for two gliders

So we will have

$m_1 v_1 + m_2 v_2 = (m_1 + m_2)v_i$

$m_1 = m_2$

$1.300 + v_2 = 2(0.500)$

$v_2 = -0.300$

Part b)

now we will have

initial kinetic energy of both gliders is given as

$K_i = \frac{1}{2}(m + m)(0.500)^2$

$K_i = 0.25m$

Final kinetic energy of two gliders

$K_f = \frac{1}{2}m(0.300)^2 + \frac{1}{2}m(1.300)^2$

$K_f = 0.89 m$

so here final kinetic energy is more than the initial kinetic energy

This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks

8 0

3 years ago

A globe is an example of a physical model true or false

mars1129 [50]

True. Because you can touch it and it's physically real.

4 0

3 years ago

Read 2 more answers