What is the independent variable? What is the dependent variable? Please help!

As the distance between an object and the center of the Earth is increased...

Alex

Explanation:

the answer is D.

have a great day !

3 0

2 years ago

The KEOM tower across the street from West is approx. 155 meters high

blondinia [14]

You told your insane friend that it will take the book 5.6 s to get to the ground.

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

Height (H) = 155 m

<u>NOTE</u>: Acceleration due to gravity (g) = 10 m/s²

The time taken for the book to get to ground can be obtained as follow:

155 = ½ × 10 × t²

155 = 5 × t²

<h3>Divide both side by 5</h3>

$t^{2} = \frac{155}{5}\\\\$

t² = 31

<h3>Take the square root of both side </h3>

$t = \sqrt{31}$

Thus, the time taken for the book to get to the ground is 5.6 s

Hence, you told your insane friend that it will take the book 5.6 s to get to the ground.

Learn more: brainly.com/question/24903556

7 0

2 years ago

A BB gun is discharged at a cardboard box of mass m2 = 0.65 kg on a frictionless surface. The BB has a mass of m1 = 0.012 kg and

balandron [24]

Answer:

1. $v_{1f} = v_{1i} - \frac{m_2}{m_1*v_{2f}}$

2. $v_{1f}=77.875m/s$

3. $v_f=1.79m/s$

Explanation:

Use conservation of momentum:

$p_i=p_f$

$m_1*v_{1i} + m_2*v_{2i} = m_1*v_{1f} + m_2*v_{2f}$

1.

The expression for the magnitude of the BB's velocity is

v2i = 0 m/s, solve for v1f

$v_{1f} = v_{1i} - \frac{m_2}{m_1*v_{2f}}$

2.

Now replacing numeric to find the value

$v_{1f} = 99 m/s - \frac{0.65kg}{0.012kg*0.39m/s}$

$v_{1f}=77.875m/s$

3.

Now is doesn't exist the box the velocity will be

v1f = v2f = vf

Conservation of Momentum

$p_i=p_f$

$m_1*v_{1i} = (m_1+m_2)*v_f$

$v_f = m_1*v_{1i} / (m1+m2)$

$v_f = \frac{0.012kg * 99 m/s }{(0.012 kg + 0.65 kg)}$

$v_f=1.79m/s$

8 0

3 years ago

Which of the following statements is true?

fenix001 [56]

Answer:Light (electromagnetic) energy does not require a medium through which to travel.

Explanation:

Electromagnetic waves doesnt need to medium for travell

Ex ; Ultra violet rays , X rays

Sound waves needs to medium to travell but electromagnetic waves doesnt

Electromagnetic waves are constructed due to perpendicular electric field and magnetic field

Application of electromagnetic waves

Visible rays helps to see anything

IR rays is used in medical industry for cancer treatment

4 0

3 years ago

List the following items in order of decreasing speed, from greatest to least: (i) A wind-up toy car that moves 0.15 m in 2.5 s.

a_sh-v [17]

Answer:

(iii) > (ii) > (iv) > (i)

Explanation:

Part (i):

$\textrm{Speed of the wind-up toy} = \dfrac{\textrm{distance traveled}}{\textrm{Time taken}}\\\Rightarrow v_1=\dfrac{0.15\ m}{2.5\ s}\\\Rightarrow v_1 = 0.06\ m/s$

Part (ii):

$\textrm{Speed of the soccer ball} = \dfrac{\textrm{distance traveled}}{\textrm{Time taken}}\\\Rightarrow v_2=\dfrac{2.3\ m}{0.55\ s}\\\Rightarrow v_2 = 4.18\ m/s$

Part (iii):

$\textrm{Speed of the bicycle} = \dfrac{\textrm{distance traveled}}{\textrm{Time taken}}\\\Rightarrow v_3=\dfrac{0.66\ m}{0.075\ s}\\\Rightarrow v_3 = 8.8\ m/s$

Part (iv):

$\textrm{Speed of the cat} = \dfrac{\textrm{distance traveled}}{\textrm{Time taken}}\\\Rightarrow v_4=\dfrac{8.0\ m}{2.0\ s}\\\Rightarrow v_4 = 4.0\ m/s$

From the above calculations, we have

$v_3>v_2>v_4>v_1$

So, the speed in the parts mentioned arranged in decreasing order as follow:

(iii) > (ii) > (iv) > (i)

3 0

2 years ago