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3 years ago

Use the drawing below to answer the following question.

Physics

1 answer:

ss7ja [257]3 years ago

6 0

Answer:

Explanation:

Force = mass x acceleration

if the force is constant for each of the boxes, the smaller a boxes mass the greater its acceleration while the force is applied

Therefore the smaller box will have a greater initial velocity and will slide the furthest before it stops.

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Rom4ik [11]

4
I think that’s correct

4 0

3 years ago

3. Now use the brown knob at the opening of the hose to adjust the angle at which water comes out. When water comes out at an an

Alenkasestr [34]

Answer:

Due to brown knob which controls its angle.

Explanation:

When water comes out at an angle instead of going straight up, water does not shoot as high as before because its speed is controlled by the brown knob in order to throw water in another angle. If we adjust the brown knob present at the opening of hose pipe in a straight angle the water shoot very high because water moves with high pressure and no barrier is present between its way.

4 0

3 years ago

A projectile is launched at ground level with an initial speed of 50.0m/s at an angle of 30° above the horizontal. It strikes a

tino4ka555 [31]

Answer:

x = 129.9 m

y = 30.9 m

Explanation:

When an object is thrown into the air under the effect of the gravitational force, the movement of the projectile is observed. Then it can be considered as two separate motions, horizontal motion and vertical motion. Both motions are different, so that they can be handled independently.

Given data:

$v_{i}$ = 50 m/s

Angle = 30°

Time = t = 3 s

horizontal component of velocity = $v_{i_{x}}$ = $v_{i}$ cos30°

$v_{i_{x}}$ = 50cos30°

$v_{i_{x}}$ = 43.3 m/s

Vertical component of velocity = $v_{i_{y}}$ = $v_{i}$ Sin30°

$v_{i_{y}}$ = 50Sin30°

$v_{i_{y}}$ = 25 m/s

This is a projectile motion, and we know that in projectile motion the horizontal component of the velocity remain constant throughout his motion. So there is no acceleration along horizontal path.

But the vertical component of velocity varies with time and there is an acceleration along vertical direction which is equal to gravitational acceleration g.

Horizontal distance = x = $v_{i_{x}}$ t

x = 43.3*3

x = 129.9 m

Vertical Distance = y = $v_{i_{y}}$ t -0.5gt²

y = 25*3 - 0.5*9.8*3²

y = 75 - 44.1

y = 30.9 m

3 0

3 years ago

Which molecule has charges that are free to move around?

borishaifa [10]

A polar molecules have charges that are free to move around

6 0

4 years ago

Which shows one example of physical change and the one example of a chemical change?

atroni [7]

Answer:

D. Freezing water and burning coal

Explanation:

8 0

3 years ago