A fully charged parallel-plate capacitor remains connected to a battery while you slide a dielectric between the plates. What happens to the value of ?V?

1.It increases.
2.It decreases.
3.It stays the same.


3

Physics & Space Science

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A comet that has an orbit around the Sun inclined to the ecliptic plane by 65° probably originated in the Kuiper belt

Indicate whether the statement is true or false

Physics & Space Science

A steel lift column in a service station is a solid cylinder 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 20 × 1010 N/m2. By what distance does the column compress when a 5000-kg truck is on it?

A) 4.7 × 10-7 m B) 8.0 × 10-7 m C) 3.2 × 10-6 m D) 7.8 × 10-6 m E) 3.1 × 10-5 m

Physics & Space Science

The electric field lines between a pair of equal and opposite charges are

A) directed from positive to negative. B) more concentrated closer to the charges. C) vectors, with patterns resulting from the inverse-square law. D) all of the above E) none of the above

Physics & Space Science

A radioactive nuclide of atomic number Z emits an alpha particle and the daughter nucleus then emits a beta particle. What is the atomic number of the resulting nuclide?

A) Z-1 B) Z+1 C) Z-2 D) Z-3

Physics & Space Science