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3 years ago

An 80kg person falls 60 m off of a waterfall. What is her GPE?

Physics

1 answer:

ElenaW [278]3 years ago

4 0

Answer:

The gravitational potential energy of the man

= mass of the man(m) × gravitational acceleration(g) × height (h)

80 Kg × 9.8 m/s^2 × 60 m

80 × 9.8 x 60 ( kg ×m^2/s^2)

47040 Joules (ans)

Hope it helps

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Simlarity between longitudanal and transverse waves

babymother [125]

For transverse waves, the waves move in perpendicular direction to the source of vibration. For longitudinal waves, the waves move in parallel direction to the source of vibration . They are similar in the sense that energy is transferred in the form of waves.

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3 years ago

Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.9 cm and a current of 12 A. The bigger lo

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Explanation:

Below is an attachment containing the solution.

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3 years ago

A crew team rows a boat at a rate of 20 km/h in still water. Beginning at time = 0 minutes, the team rows for 30 minutes up a ri

umka21 [38]

Since they are rowing against the current, their velocity realtive to the groud is 20-1.5 = 18.5km/h
So the distance travelled is 18.5km/h*0.5h = 9.25km
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3 years ago

A horizontal beam of electrons initially moving at 4.0×10^7 m/s is deflected vertically by the vertical electric field between o

givi [52]

Answer:

$1.77\times 10^{-7}\ C/m^2$

0.000439077936334 m

Explanation:

q = Charge of electron = $1.6\times 10^{-19}\ C$

E = Electric field = $2\times 10^{4}\ N/C$

$\epsilon_0$ = Permittivity of free space = $8.85\times 10^{-12}\ F/m$

d = Distance between plates = 2 cm (assumed)

m = Mass of electron = $9.11\times 10^{-31}\ kg$

The beam consists of electrons which means it has negative charge this means the upper plates will be positive and the lower plate will be negative.

The direction is upper to lower lower plate.

$\epsilon_0$ = Permittivity of free space = $8.85\times 10^{-12}\ F/m$

Electric flux is given by

$\phi=\epsilon_0E\\\Rightarrow \phi=8.85\times 10^{-12}\times 2\times 10^{4}\\\Rightarrow \phi=1.77\times 10^{-7}\ C/m^2$

The charge per unit area on the plates is $1.77\times 10^{-7}\ C/m^2$

Deflection is given by

$s=\dfrac{1}{2}\dfrac{qE}{m}(\dfrac{d}{v})^2\\\Rightarrow s=\dfrac{1}{2}\dfrac{1.6\times 10^{-19}\times 2\times 10^4}{9.11\times 10^{-31}}(\dfrac{0.02}{4\times 10^7})^2\\\Rightarrow s=0.000439077936334\ m$

The deflection is 0.000439077936334 m

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3 years ago

A scientific hypothesis starts with the lowest level of acceptance but can become stronger as they are used and survive repeated

Pachacha [2.7K]

Answer:

True.

Explanation:

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3 years ago

Read 2 more answers