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3 years ago

Hey! I need help with this question. Will give Brainlest!! Thanks in advance!

Physics

2 answers:

Evgesh-ka [11]3 years ago

8 0

The answers are In the book

yaroslaw [1]3 years ago

4 0

A) is Ep= mgh so since you already have mg which is 500N and h which is 10m multiply them and your answer will be 5000J potential energy.

b) do the same thing as a except use 5m instead of 10m which gives you 2500N

c) the potential energy is transferred to kinetic since he’s at bottom of hill of mechanical energy. so kinetic energy would be 5000J since that’s the mechanical energy since at top of hill there’s 0 kinetic, making all the potential the same as the mechanical

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What could be the average human density? Justify?

son4ous [18]

Answer:

985 kg/m3

Explanation:

The average density of the human body is 985 kg/m3 k g / m 3 , and the typical density of seawater is about 1020 kg/m3 k g / m 3 .

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3 years ago

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laila [671]

Electric field strength = Force/Charge

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3 years ago

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A car travels at a velocity of 10 m/s north for 50 s Which of the following equations correctly determines the car's displacemen

Shalnov [3]

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3 years ago

A 0.140 kg baseball is thrown with a velocity of 33.6 m/s. It is struck with an average force of 5000.0 N, which results in a ve

timama [110]

Answer:

0.00198 secs

Explanation:

Parameters given:

Mass of baseball, m = 0.14 kg

Initial velocity of baseball, u = 33.6 m/s

Force applied to baseball, F = -5000 N

(The force is applied in an opposite direction to the initial velocity)

Final velocity, v = -37 m/s

Using the impulse-momentum theory, we have that the impulse applied to the baseball is equal to the change in momentum of the baseball:

FΔt = m(v - u)

Time interval, Δt, will be given as:

Δt = $\frac{m(v - u)}{F}$

Δt = $\frac{0.14(-37.0 - 33.6)}{-5000}$

Δt = $\frac{0.14 * -70.6}{-5000}$

Δt = $\frac{-9.884}{5000}$

Δt = $0.00198 secs$

The bat and the baseball were in contact for 0.00198 secs.

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4 years ago

III. Classify each substance as solute or solvent. 1. buko juice 2. vinegar 3. flour 4. coffee powder 5. salt

frutty [35]

ANSWER

my answer is in the photo above

EXPLANATION

A solvent is a substance in which a solute dissolves and solvents are in most cases liquids while a solute is a substance that dissolves in a solute and in their especially solid in nature

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3 years ago