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Sholpan [36]
3 years ago
5

A ball thrown in the air will never go as far as physics ideally would predict because?

Physics
1 answer:
katrin2010 [14]3 years ago
6 0
Air resistance fefrgtdnjrcbrdg
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A 60.0 kg girl stands up on a stationary floating raft and decides to go into shore. She dives off the 180 kg floating raft with
padilas [110]
Momentum, p = m.v
m of the girl = 60.0 kg
m of the boat = 180 kg
v of the girl = 4.0 m/s

A) Momentum of the girl as she is diving:
p = m.v = 60.0 kg * 4.0 m/s = 24.0 N/s

B) momentum of the raft = - momentum of the girl = -24.0 N/s

C) speed of the raft

p = m.v ; v = p/m = 24.0N/s / 180 kg = -0.13 m/s [i.e. in the opposite direction of the girl's velocity]
8 0
3 years ago
Net force causes motion
ASHA 777 [7]

Answer:

yes

Explanation:

8 0
3 years ago
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How does weathering alter the surface of land? Is it D?
Hoochie [10]

I don't think the shaping of the beach or hill would be considered
weathering, especially since it says "as smaller particles are moved
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'C' is really talking about weathering, where rocks are broken up into
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4 0
3 years ago
How much work is required to turn an electric dipole 180° in a uniform electric field of magnitude E = 46.0 N/C if the dipole mo
chubhunter [2.5K]

Answer:

W=1.22*10^{-23}J

Explanation:

Torque and energy of an electric dipole in an electric field we find:

W=U(\alpha_{o}+\pi  )-U(\alpha_{o} )=-pE(cos(\alpha_{o}+\pi )-cos(\alpha_{o} ))\\W=2pECos\alpha_{o}\\ W=2(3.02*10^{-25}C.m )(46.oN/C)Cos64\\W=1.22*10^{-23}J

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3 years ago
Now instead a 3-mw laser of wavelength λ = 760 nm is directed into the interferometer (with the mirror m1 at the displacement ca
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power received will always remain same and does not depends on the distance

it will be same as the power of source

P = 3 mW

now the energy released by one photon is given as

E = \frac{hc}{\lambda}

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E = 2.6 * 10^{-19} J

now let say N photons per second released

N * 2.6 * 10^{-19} = 3 * 10^{-3}

N = 1.15* 10^{16} per\: second

7 0
3 years ago
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