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iogann1982 [59]
3 years ago
9

If a 10 kg object has 200 J of gravitational potential energy, how high was has it been lifted above the ground?

Physics
1 answer:
Fantom [35]3 years ago
6 0
Potential energy is possessed by the body while at rest while the body in motion possesses kinetic energy.
Potential energy is given by mgh where m is the mass of the body, g is the gravitational acceleration(9.8m/s^2) and h is the height.
Therefore, 200J = 10  × 9.8 ×h
                        h = 200/98
                        h = 2.041 m
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The circumference of the Earth is approximately 40,000 km. The Earth has a magnetic field that protects it from solar particle r
olasank [31]

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3 years ago
Write the following as powers of ten with one figure before the decimal point:
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A plucked violin string carries a traveling wave given by the equation f(x,t)=asin[b(x−ct)+ϕi], with a = 0.00580 m , b = 33.05 m
Viktor [21]

Answer:

A) Φ = 0 , B)  T = 7.76 s

Explanation:

A) to find the value of the phase constant replace the value

          0 = a sin (b (0- 0) + Φ)

           0 = sin Φ

           Φ = sin⁻¹ 0

           Φ = 0

B) the period is defined by time or when the movement begins to repeat itself

So that the sine function is repeated when the angle passes 2pi

            b (x- ct) = 2pi

If we are at a fixed point x = 0

           b c t = 2pi

            t = 2π / bc

Let's calculate

            T = 2π / (33.05 245)

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0 0
3 years ago
Read 2 more answers
A rock is dropped off a cliff and falls the first half of the distance to the ground in 2.0 seconds. how long will it take to fa
son4ous [18]

Answer:

The answer is 0.83 seconds.

Explanation:

The formula of free fall is following:

h=1/2*g*t^2

Where g=9.8 m/s^2 and t=2 seconds, the rock takes:

h=1/2*9.8*2^2=19.6

19.6 meters. This is the half distance of the cliff. The whole distance is 39.2 meters. So it takes:

39.2=1/2*9.8*t^2\\t^2=8\\t=2.83

2.83 second to fall down completely. The rock takes the second half of the cliff in 0.83 seconds

8 0
3 years ago
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