WILL GIVE BRAINLIEST

A boy sledding down a hill accelerates at 1.30m/s^2

olga2289 [7]

Idkggghh j hhjj 99th yuuuu

8 0

3 years ago

A cannon is fired straight up into the air. If the cannon ball comes back down to the launch point in 5 seconds, what was the ma

Nana76 [90]

Answer:

30.63 m

Explanation:

From the question given above, the following data were obtained:

Total time (T) spent by the ball in air = 5 s

Maximum height (h) =.?

Next, we shall determine the time taken to reach the maximum height. This can be obtained as follow:

Total time (T) spent by the ball in air = 5 s

Time (t) taken to reach the maximum height =.?

T = 2t

5 = 2t

Divide both side by 2

t = 5/2

t = 2.5 s

Thus, the time (t) taken to reach the maximum height is 2.5 s

Finally, we shall determine the maximum height reached by the ball as follow:

Time (t) taken to reach the maximum height = 2.5 s

Acceleration due to gravity (g) = 9.8 m/s²

Maximum height (h) =.?

h = ½gt²

h = ½ × 9.8 × 2.5²

h = 4.9 × 6.25

h = 30.625 ≈ 30.63 m

Therefore, the maximum height reached by the cannon ball is 30.63 m

3 0

4 years ago

An electron moves 4.5 m in the direction of an electric field of strength 325 N/C. What is the change in electrical potential en

Vinvika [58]

Calculate q* E * d
<span>Put q = 1.6 x 10^-19 </span>
<span>E = 325 </span>
<span>d = 4.5

I hope this helps!</span>

6 0

4 years ago

A ship is to reach a place 10° south of west. In what direction should it be steered if declination at the place is 17° west?.

Readme [11.4K]

The direction is 7⁰ from west to the south.

We need to know about the degree and direction to solve this problem. The angle between west and south is 90⁰.

From the question above, we know that

Position = 10⁰ south of west

Destination = 17⁰ south of west

Hence, the direction of the ship should be

Direction from west = Destination - Position

Direction from west = 17⁰ - 10⁰

Direction from west = 7⁰

The direction is 7⁰ from west

or

Direction from south = Destination - Position

Direction from south = (90⁰ - 17⁰) - (90⁰ - 10⁰)

Direction from south = -7⁰

The direction is 7⁰ to the south.

Hence, the direction is 7⁰ from west to the south.

For more on directions at: brainly.com/question/6559935

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6 0

2 years ago

If a critical mass of fissionable material in a spherical shape is flattened like a hamburger, it will be?

lawyer [7]

A subcritical state will result by flattening a critical mass of fissionable material into the shape of a hamburger.

To find the answer, we need to know about the critical mass.

<h3>What is critical mass?</h3>

A material's nuclear characteristics (particularly, its nuclear fission cross-section), density, shape, enrichment, purity, temperature, and environment all affect its critical mass.

A mass of fissile material is considered to be in a critical state when a nuclear chain reaction in the mass is self-sustaining and there is no change in power, temperature, or neutron population.
At a specific temperature, a mass might be precisely critical.

A subcritical state will result by flattening a critical mass of fissionable material into the shape of a hamburger.

The cross sections for fission and absorption grow as the relative neutron velocity drops.

Thus, we can conclude that, a subcritical state will result by flattening a critical mass of fissionable material into the shape of a hamburger.

Learn more about the critical mass here:

brainly.com/question/12545809

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8 0

1 year ago