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Stells [14]
4 years ago
9

[25 points] Imagine two billiard balls on a pool table. Ball A has a mass of 7 kilograms and ball B has a mass of 2 kilograms. T

he initial velocity of the ball A is 6 meters per second to the right, and the initial velocity of the balloon B is 12 meters per second to the left.
When the two balls hit each other, what will happen if it is a perfectly inelastic collision?
Physics
1 answer:
evablogger [386]4 years ago
5 0
6 meters is left because you subtract 12 meters from 6
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A ball is dropped from the top of a building. What is the velocity of the ball after 4.2 seconds
Svetach [21]

Answer:

41.16 m/s

Explanation:

Final velocity is equal to gravity multiplied by time; v = gt

Gravity is always 9.8 m/s/s (m/s^2), so

v = 9.8 * 4.2

v = 41.16

5 0
3 years ago
Explain how bar graphs can show comparisons between 2 topics.
Pachacha [2.7K]

Answer:

A bar chart is typically used for the comparison of informations obtained from a data collection by representing each value (information) with rectangular bars respectively.

Explanation:

A bar chart also known as a bar graph can be defined as the graphical representation of data (informations) by using vertical columns or rectangular bars. When a data set is observed, a bar chart can be used to graphically represent or record the total or overall amount of information contained therein. Generally, bar charts are used for the comparison of informations obtained from a data collection by representing each value (information) with rectangular bars respectively.

The bar graph has a x-axis and a y-axis used to represent the various categories of data collected.

In this scenario, the x-axis is used to denote the points earned by the teams while the y-axis is used to denote the seasons as seen in the image attached.

<em>Hence, point scores by team (Team A, B and C) per seasons (2002, 2003, 2004 and 2005) can best be compared through the use of a bar chart (graph).</em>

8 0
3 years ago
Read 2 more answers
Electric fields and magnetic fields are both present near a charged atom.<br><br>True or false?​
SpyIntel [72]
False just trust me it’s false
7 0
4 years ago
The storm surge of a hurricane can cause
BabaBlast [244]

Answer:

it can cause huricans and flooding

Explanation:

Storm surge is the rising of the sea level due to the low pressure, high winds, and high waves associated with a hurricane as it makes landfall. The storm surge can cause significant flooding and cost people their lives if they're caught unexpected

7 0
3 years ago
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A damped harmonic oscillator consists of a block (m = 2.00 kg), a spring (k = 10.0 N/m), and a damping force (F = −bv). Initiall
MAXImum [283]

Explanation:

Given that,

Mass of block = 2.00 kg

Spring constant = 10.0 N/m

Initial amplitude x_{i}= 25.0

Final amplitude x_{f}= 0.75 x_{i}

Number of oscillation = 4

(a). We need to calculate the time

Given formula,

t = nT

t=n2\pi\sqrt{\dfrac{m}{k}}

Put the value into the formula

t=4\times2\pi\sqrt{\dfrac{2.00}{10.0}}

t=11.23\ sec

We need to calculate the value of b

Using damping formula

x_{m}e^{\dfrac{-bt}{2m}}=0.75x_{i}

e^{\dfrac{-b\times11.23}{2\times2.00}}=0.75

e^{-2.81b}=0.75

-2.81 b=ln(0.75)

b=\dfrac{0.28}{2.81}

b=0.099\ kg/s

(b), The damping force equation is

m\dfrac{d^2x}{dt^2}+b\dfrac{dx}{dt}+kx=0

We know that,

The time period is

T=\dfrac{2\pi}{\sqrt{\dfrac{k}{m}+(\dfrac{b}{2m})^2}}

Therefore, time period is affected by damping force.

Hence, This is the required solution.

5 0
3 years ago
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