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valkas [14]
2 years ago
11

A ball is dropped from the rest from a height of 6. 0 meters above the ground. The ball falls freely and reaches the ground at t

he 1.1 seconds later. What is the average speed of the ball
Physics
2 answers:
igor_vitrenko [27]2 years ago
8 0
What is the velocity of the ball<span> when it </span>reaches<span> its highest point? ... Then double it for the "hang time"-the time one's feet are off the </span>ground<span>. ... Calculate the </span>speed<span> of a bowling </span>ball<span> that travels 5.0 </span>meters<span> in 2.4</span>seconds<span>. ... An object </span>falls freely<span> from </span>rest<span> on a planet where the acceleration due to gravity is twice as much as it is ...</span>6';"'A ball is dropped<span> from </span>rest from a height<span> 6.0 </span>meters above<span> t e </span>ground<span>. The hall </span><span>falls freely and reaches the ground 1.1 seconds later.

</span>
makkiz [27]2 years ago
8 0
The speed is =6m/1.1s

Therefore the speed is 5.454545... meter per second
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if it takes 3.5 hours for the hogwarts express moving at a speed of 120 mi/hr to make it from platform 9 and 3/4 to hogwarts how
Mila [183]
Use the formula distance = rate * time. substitute in the values you know, which gives you distance = 120mph * 3.5hours. multiply 120 and 3.5 to get distance = 420 miles.
4 0
1 year ago
At 213.1 K a substance has a vapor pressure of 45.77 mmHg. At 243.7 K it has a vapor pressure of 193.1 mm Hg. Calculate its heat
vlabodo [156]

Answer:

20.3125 kJ/mol

Explanation:

P_{i} = initial vapor pressure = 45.77 mm Hg

P_{f} = final vapor pressure = 193.1 mm Hg

T_{i} = initial temperature = 213.1 K

T_{f} = final temperature = 243.7 K

H = Heat of vaporization

Using the equation

ln\left ( \frac{P_{f}}{P_{i}} \right ) = \left ( \frac{-H}{R} \right )\left ( \frac{1}{T_{f}} - \frac{1}{T_{i}}\right)

ln\left ( \frac{193.1}{45.77} \right ) = \left ( \frac{-H}{8.314} \right )\left ( \frac{1}{243.7} - \frac{1}{213.1}\right)

H = 20312.5 J/mol

H = 20.3125 kJ/mol

8 0
2 years ago
An automobile approaches a barrier at a speed of 20 m/s along a level road. The driver locks the brakes at a distance of 50 m fr
AleksAgata [21]

Answer:

μ = 0.408

Explanation:

given,

speed of the automobile (u)= 20 m/s

distance = 50 m

final velocity  (v) = 0 m/s

kinetic friction = ?

we know that,

v² = u² + 2 a s

0 = 20² + 2 × a × 50

a = \dfrac{400}{2\times 50}

a = 4 m/s²

We know

F = ma = μN

ma = μ mg

a = μ g

\mu = \dfrac{a}{g}

\mu = \dfrac{4}{9.81}

μ = 0.408

hence, Kinetic friction require to stop the automobile before it hit barrier is 0.408

5 0
2 years ago
568 muons were counted by a detector on the top of Mount Washington in a one hour period of time. Assuming moving muons keep tim
AlladinOne [14]
The answer to this question is:

C-"That moving clocks run slower"

Your Welcome :)
6 0
2 years ago
Read 2 more answers
Substance X is placed in a container with substance Y. Both substances are fluids. Substance X initially sinks to the bottom of
Brut [27]

Answer: Option (A) is the correct answer.

Explanation:

Convection is a process in which heat transfers from a hotter substance to a colder substance.

As a result, the substance which is less dense will rise and the more denser substance will sink due to the influence of gravity.

Thus, we can conclude that in the given situation substance X will rise due to convection.

3 0
2 years ago
Read 2 more answers
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