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3 years ago

A diver running 2.2 m/s drives out horizontally from the edge of a vertical cliff and 2.9 s

1 answer:

8 0

To determine the horizontal distance that the diver traveled before finally hitting the water, we simply multiply the speed (2.2 m/s) by the amount of time elapsed which is 2.9 s. Mathematically,
horizontal distance = (2.2 m/s) x (2.9 s)
= 6.38 m
Thus, the answer to the question above is 6.38 m.

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Paha777 [63]

Answer:

=140 cm²

Explanation:

____ ×20x 14

___ x base × height

is the formula have a gr8 day :)

5 0

3 years ago

An ideal spring hangs from the ceiling. A 1.25-kg mass is hung from the spring. After all vibrations have died away, the spring

ch4aika [34]

The kinetic energy of the mass at the instant it passes back through its equilibrium position is about 1.20 J

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<h3>Further explanation</h3>

Let's recall Elastic Potential Energy formula as follows:

$\boxed{E_p = \frac{1}{2}k x^2}$

where:

<em>Ep = elastic potential energy ( J )</em>

<em>k = spring constant ( N/m )</em>

<em>x = spring extension ( compression ) ( m )</em>

Let us now tackle the problem!

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<u>Given:</u>

mass of object = m = 1.25 kg

initial extension = x = 0.0275 m

final extension = x' = 0.0735 - 0.0275 = 0.0460 m

<u>Asked:</u>

kinetic energy = Ek = ?

<u>Solution:</u>

<em>Firstly , we will calculate the spring constant by using </em><em>Hooke's Law</em><em> as follows:</em>

$F = k x$

$mg = k x$

$k = mg \div x$

$k = 1.25(9.8) \div 0.0275$

$k = 445 \frac{5}{11} \texttt{ N/m}$

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<em>Next , we will use </em><em>Conservation of Energy</em><em> formula to solve this problem:</em>

$Ep_1 + Ek_1 = Ep_2 + Ek_2$

$\frac{1}{2}k (x')^2 + mgh + 0 = \frac{1}{2}k x^2 + Ek$

$Ek = \frac{1}{2}k (x')^2 + mgh - \frac{1}{2}k x^2$

$Ek = \frac{1}{2}k ( (x')^2 - x^2 ) + mgh$

$Ek = \frac{1}{2}(445 \frac{5}{11}) ( 0.0460^2 - 0.0275^2 ) + 1.25(9.8)(0.0735)$

$\boxed {Ek \approx 1.20 \texttt{ J}}$

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<h3>Learn more</h3>

Kinetic Energy : brainly.com/question/692781

Acceleration : brainly.com/question/2283922

The Speed of Car : brainly.com/question/568302
Young Modulus : brainly.com/question/9202964
Simple Harmonic Motion : brainly.com/question/12069840

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<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Elasticity

8 0

3 years ago

Read 2 more answers

What is the definition of mass?

andriy [413]

Mass is the amount of matter in an object. it is measured in grams, kg, ect.

6 0

3 years ago

Read 2 more answers

An asteroid of mass 5.7×104 kg carrying a negative charge of 14.0 μC is 190 m from a second asteroid of mass 5.5×104 kg carrying

Finger [1]

Answer:

repulsion force es R = 5,224 10⁻³ N

Explanation:

We use Newton's second law to add forces, the elective force is repulsive because the asteroids have the same type of charge and gravitational force is always attractive.

Gravitational force

Fg = G m1 m2 / r²

Fg = 6,673 10⁻¹¹ 5.7 10⁴ 5.5 10⁴/190²

Fg = 5,795 10⁻⁶ N

Electric force

Fe = k q1 q2 / r²

Fe = 8.99 10⁹ 14.0 10⁻⁶ 15.0 10⁻⁶ / 190²

Fe = 5.2296 10⁻³ N

The resulting force is

R = Fe - Fg

R = 5.2296 10⁻³ - 5.795 10⁻⁶= 5229.6 10⁻⁶ - 5,795 10⁻⁶

R = 5,224 10⁻³ N

this is a repulsive force and the asteroids move away from each other

7 0

3 years ago

Metal atoms tend to give away valence electrons when they bond with nonmetal atoms. What type of bond will form between the meta

Svetach [21]

Covalent bond occurs due to chemical reaction

7 0

4 years ago