1. a. A copper sphere has a radius of 2.50 m under normal room pressure of 1.0 × 105 N/m2. If we increase the pressure on this sphere to 10 times the normal room pressure, what is the change in its volume? The bulk modulus for copper is 1.4 x 1011 Pa. b. 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0-kg child sits on the other end. The beam balances when a fulcrum is placed below the beam a distance 1.10 m from the 30.0-kg child. How long is the beam?

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Chapter1: Units, Trigonometry. And Vectors
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1.
a. A copper sphere has a radius of 2.50 m under normal room pressure of 1.0 × 105
N/m2. If we increase the pressure on this sphere to 10 times the normal room
pressure, what is the change in its volume? The bulk modulus for copper is 1.4 x
1011 Pa.
b. 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a
40.0-kg child sits on the other end. The beam balances when a fulcrum is placed
below the beam a distance 1.10 m from the 30.0-kg child. How long is the beam?
Transcribed Image Text:1. a. A copper sphere has a radius of 2.50 m under normal room pressure of 1.0 × 105 N/m2. If we increase the pressure on this sphere to 10 times the normal room pressure, what is the change in its volume? The bulk modulus for copper is 1.4 x 1011 Pa. b. 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0-kg child sits on the other end. The beam balances when a fulcrum is placed below the beam a distance 1.10 m from the 30.0-kg child. How long is the beam?
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