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fiasKO [112]
3 years ago
12

shelly starts from rest on her bicycle at the top of a hill. After 6.0s she has reached a final velocity of 14m/s. what is shell

ys acceleration.
Physics
2 answers:
earnstyle [38]3 years ago
8 0
Divide 14 by 6 and there is your answer with the unit of m
Anna007 [38]3 years ago
7 0

Answer:

Acceleration, a=2.33\ m/s^2

Explanation:

It is given that,

Initial speed of Shelly, u = 0

After 6 seconds, she has reached a final velocity of 14 m/s, v = 14 m/s

We need to find the acceleration of Shelly. The formula to find the acceleration is given by :

a=\dfrac{v-u}{t}

a=\dfrac{14\ m/s-0}{6\ s}

a=2.33\ m/s^2

So, the acceleration of Shelly's is 2.33\ m/s^2. Hence, this is the required solution.

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A thermistor is placed in a 100 °C environment and its resistance measured as 20,000 Ω. The material constant, β, for this therm
Karo-lina-s [1.5K]

Answer:

the thermistor temperature = 325.68 \ ^0 \ C

Explanation:

Given that:

A thermistor is placed in a 100 °C environment and its resistance measured as 20,000 Ω.

i.e Temperature

T_1 = 100^0C\\T_1 = (100+273)K\\\\T_1 = 373\ K

Resistance of the thermistor R_1 = 20,000 ohms

Material constant \beta = 3650

Resistance of the thermistor R_2 = 500 ohms

Using the equation :

R_1 = R_2  \ e^{\beta} (\frac{1}{T_1}- \frac{1}{T_2})

\frac{R_1}{ R_2} =   \ e^{\beta} (\frac{1}{T_1}- \frac{1}{T_2})

Taking log of both sides

In \ \frac{R_1}{ R_2} = In \  \ e^{\beta} (\frac{1}{T_1}- \frac{1}{T_2})

In \ \frac{R_1}{ R_2} = {\beta} (\frac{1}{T_1}- \frac{1}{T_2})

\frac{ In \ \frac{R_1}{ R_2}}{ {\beta}} = (\frac{1}{T_1}- \frac{1}{T_2})

\frac{1}{T_2} =   \frac{1}{T_1}  -          \frac{ In \ \frac{R_1}{ R_2}}{ {\beta}}

{T_2} =  \frac{\beta T_1}{\beta - In (\frac{R_1}{R_2})T}

Replacing our values into the above equation :

{T_2} =  \frac{3650*373}{3650 - In (\frac{20000}{500})373}

{T_2} =  \frac{1361450}{3650 - 3.6888*373}

{T_2} =  \frac{1361450}{3650 - 1375.92}

{T_2} =  \frac{1361450}{2274.08}

{T_2} = 598.68 \ K

{T_2} = 325.68 \ ^0 \ C

Thus, the thermistor temperature = 325.68 \ ^0 \ C

4 0
4 years ago
Given that no sunlight can penetrate Europa’s ice shell, what would be the type of energy that could make some form of europan l
Anna71 [15]

Answer:

life in europa is possible due to chemical energy, surface and ocean intracts with one another and give off chemical energy.

Explanation:

the ocean in europa is in contact with the underlying rocky mantle and at high temperatures, its rocks and water interact. oxidization and reduction in which molecules give off and accept electrons occur in it  and in deep ocean, when chemically reduction vent fluids interacts with oxygen containing seawater to produce energy that can support micro-organisms and animals.

5 0
3 years ago
What does "Position (m)” represent in the graph?
SCORPION-xisa [38]
<span>Position (m)” represent  <u>t</u></span><u>he dependent variable</u> in the graph.
5 0
4 years ago
Read 2 more answers
A 15kg mass suspended from a ceiling is pulled aside with a horizontal force, F. Calculate the value of the tension.​
Anit [1.1K]

Answer:

147 Newtons

Explanation:

To find tension, you can use the formula Tension = (mass)(gravity)

*Gravity's acceleration = 9.8 m/s^2 because of Newton's law of universal gravitation*

T = (15kg)(9.8m/s^2)

  = 147 Newtons

Hope this helps! Best of luck <3

8 0
3 years ago
Which air mass is responsible for bringing warm, moist air to an area?
Vika [28.1K]

Answer:

Pretty sure it is air mass C

Explanation:

It looks like yhe air has warm air where as the other 2 options have cold air.

5 0
3 years ago
Read 2 more answers
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