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Vlad [161]
2 years ago
12

Using the formula below, calculate the kinetic energy of the 6 gram stone going 10 Mph

Physics
1 answer:
dusya [7]2 years ago
4 0

Answer:

Explanation:

A wonderful (NOT) mixed unit problem

convert mph to m/s

v = 10 mi/hr(5280 ft/mi)(12 in/ft)(2.54 cm/in) / (100 cm/m) / (3600 s/hr)

v = 4.4704 m/s

KE = ½(0.006)4.4704²

KE = 0.05995342848 J

KE = 0.06 J

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What is the acceleration of a car that goes from 40km/hr to 80km/hr in 2s?
tresset_1 [31]
Acceleration = v2 - v1 / t
a = 80 - 40 / 2
a = 40 / 2
a = 20 m/s²

In short, Your Answer would be 20 m/s²

Hope this helps!
5 0
3 years ago
Convection currents affect the movement of plates on the Earth’s crust. True or false.
GREYUIT [131]
True


I hope this helps and have a wonderful day filled with joy!!
8 0
3 years ago
A long. 1.0 kg rope hangs from a support that breaks, causing the rope to fall, if the pull exceeds 43 N. A student team has bui
raketka [301]

Answer:

6.8 m/s2

Explanation:

Let g = 9.8 m/s2. The total weight of both the rope and the mouse-robot is

W = Mg + mg = 1*9.8 + 2*9.8 = 29.4 N

For the rope to fails, the robot must act a force on the rope with an additional magnitude of 43 - 29.4 = 13.6 N. This force is generated by the robot itself when it's pulling itself up at an acceleration of

a = F/m = 13.6 / 2 = 6.8 m/s2

So the minimum magnitude of the acceleration would be 6.8 m/s2 for the rope to fail

8 0
4 years ago
What is your understanding of repetition and replication in science?
strojnjashka [21]
From my understanding, the two are opposite. Let me give you each word and what it scientifically means to me.

repetition
occurs when an activity is repeated by the same person

replication
occurs when an activity is repeated by a different person


I hope this completely answers your question! If you need further explanation, please let me know!
~Brooke❤️
5 0
3 years ago
Suppose you were marooned on a tropical island and had to use seawater (density 1.10 g·cm3) to make a primitive barometer. what
Paul [167]

We know that P = hρg

Where:

P - pressure Pa,

h - height in meter,

ρ – would be the density in kg / m^3; and

g - acceleration due to gravity is m / s^2


p = hρg if h = 0.735 meter, ρ = 13600 kg / meter^3, g = 10 meter/ sec^2

p = 0.735*13600*10 = 99960 Pa or 

P = 1 x 10^5 Pa



Now with sea water if we have to make a barometer:

ρ = 1100 kg / meter^3 (given) 

P = hρg if we put the value of P calculated and the value of ρ = 1100 kg / meter^3 given, we will 

get, 1 x 10^5 = h*1100*10


therefore, h = 9.09 meter or 29.82 feet of water.

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3 0
4 years ago
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