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umka2103 [35]
2 years ago
10

What would scientists using classical, Newtonian physics expect to observe

Physics
2 answers:
Sav [38]2 years ago
5 0

Answer:

A. That enough light of any frequency would cause electrons to flow.

Explanation:

A P E X

leonid [27]2 years ago
4 0

Answer: That enough light of any frequency would cause electrons to flow.

Explanation:

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Answer:

V=15.3 m/s

Explanation:

To solve this problem, we have to use the energy conservation theorem:

U_e+K_i+U_{gi}+W_{friction}=K_f+U_{gf}

the elastic potencial energy is given by:

U_e=\frac{1}{2}*k*x^2\\U_e=\frac{1}{2}*1100N/m*(4m)^2\\U_e=8800J

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this work is negative because is opposite to the movement.

The gravitational potencial energy at 2.5 m aboves is given by:

U_{gf}=m*g*h\\U_{gf}=60kg*9.8*2.5\\U_{gf}=1470J

the gravitational potential energy at the ground and the kinetic energy at the begining are 0.

8800J+0+0+-100J=\frac{1}{2}*62kg*v^2+1470J\\v=\sqrt{\frac{2(8800J-100J-1470J)}{62kg}}\\v=15.3m/s

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