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Physics, 23.12.2019 19:31, devin030505
1.a worker pulls horizontally on a crate across a rough horizontal surface, causing it to move forward with constant velocity. force a is the force exerted by the worker and force b is the force of friction due to the surface. what is the relationship between a and b?
a = b
a< b
a > b
2. in a color picture tube, an electric field exerts a net force of magnitude 1.60 × 10-13 n on an electron. the rest mass of an electron is 9.11 × 10-31 kg. what is the electron's accceleration?
1.76 × 1017 m/s2
1.96 × 1024 m/s2
1.45 × 1043 m/s2
1.60 × 10-13 m/s2
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