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2 years ago

What is the system's potential energy when its kinetic energy is equal to 34e?

1 answer:

8 0

Otal energy= PEmax on the spring = KEmax of the oject
Total Energy= KE+PE at v or x not maximum. 

Using the second line 
E= 3/4 E + PE 
PE = 1/4 E 

PEmax =E = 1/2 kA^2 
PE=E/4 = (1/2)kA^2 / 4= kA^2/8

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Convert 90 oF to Celcius, (write your answer up to 1st decimal point)

Mice21 [21]

Answer:

The answer is 32.2

Explanation:

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2 years ago

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An object of mass 0.40 kg, hanging from a spring with a spring constant of 8.0 N/m, is set into an up-and-down simple harmonic m

Sergeeva-Olga [200]

Answer:

a = 2 m/s2

Explanation:

we know from newtons 2nd law

F = ma.

we also know that from hookes law we have

F = kx

equate both value of force to get value of acceleration

kx = ma,

where,

k is spring constant = 8.0 N/m

x is maximum displacement 0.10 m

m is mass of object 0.40 kg

a = \frac{kx}{m}

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3 years ago

A plane traveled west for 4.0 hours and covered a distance of 4,400 meters what’s the velocity

tatuchka [14]

0.31m/s

Explanation:

Given parameters:

Time of travel = 4hrs = 4 x 60 x 60 = 14400s

Displacement = 4400m due west

Unknown:

Velocity = ?

Solution:

Velocity is defined as the displacement per unit of time. It is expressed in m/s or km/hr:

Velocity = $\frac{displacement}{time}$

Velocity = $\frac{4400}{14400}$ = 0.31m/s

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Velocity brainly.com/question/10883914

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3 years ago

I drop an egg from a certain distance and it takes the egg 3.74 seconds to reach the ground. How high up was the egg?

Ulleksa [173]

Answer:

B. 68.6m

Explanation:

Free Fall Motion

When a body is left to move in the air with no friction, the motion is ruled only by the force of gravity. The vertical distance a body travels in the air after a time t is .

$\displaystyle y=\frac{gt^2}{2}$