Question 1

Which of the following is a fundamental physical quantity from which other quantities are derived?

Accepted Answer

Mass

Question 2

A car accelerates from rest to a velocity of $$20\ \mathrm{m/s} in$$ $$5\ \mathrm{s}. $$What is its acceleration?

Accepted Answer

$$2\ \mathrm{m/s^2$}$$

Question 3

Which equation correctly relates force, mass, and acceleration in Newtonian mechanics?

Accepted Answer

$$F = m \cdot a$$

Question 4

A hydraulic lift uses a small piston of area $$0.01\ \mathrm{m^2$}$$ and a large piston of area $$0.5\ \mathrm{m^2$}. If a $$force of $$100\ \mathrm{N} is $$applied to the small piston, what is the force exerted by the large piston (assuming ideal conditions)?

Accepted Answer

$$5000\ \mathrm{N}$$

Question 5

Which of the following best describes the relationship between pressure and depth in a fluid at rest?

Accepted Answer

$$P = \rho g h$$

Question 6

A metal rod is heated from $$20^\circ \mathrm{C} to$$ $$120^\circ \mathrm{C}. $$Which physical property is most likely to change significantly?

Accepted Answer

Length

Question 7

Which law states that the total electric flux through a closed surface is proportional to the enclosed electric charge?

Accepted Answer

Gauss's Law

Question 8

A resistor of $$10\ \Omega is $$connected to a $$5\ \mathrm{V}$$ battery. What is the current through the resistor?

Accepted Answer

$$0.5\ \mathrm{A}$$

Question 9

Which of the following is the correct formula for the work done by a constant force $$F$$ over a displacement $$d in $$the direction of the force?

Accepted Answer

$$W = F \cdot d$$

Question 10

A block of ice at $$0^\circ \mathrm{C} is $$placed in a room at $$25^\circ \mathrm{C}. $$Which process is responsible for the ice melting?

Accepted Answer

Heat transfer from the room to the ice

Question 11

Which of the following equations represents Ohm's Law?

Accepted Answer

$$V = I \cdot R$$

Question 12

A magnet is moved rapidly into a coil of wire. Which phenomenon is observed?

Accepted Answer

An electric current is induced in the coil

Question 13

Which of the following is a vector quantity?

Accepted Answer

Velocity

Question 14

A fluid flows through a pipe that narrows. According to the continuity equation, what happens to the fluid's velocity in the narrower section?

Accepted Answer

It increases

Question 15

Which of the following best describes the relationship between temperature and average kinetic energy of molecules?

Accepted Answer

Temperature is directly proportional to average kinetic energy

Question 16

A charged particle moves perpendicular to a uniform magnetic field. What type of path does it follow?

Accepted Answer

Circular

Question 17

Which of the following is NOT a physical magnitude?

Accepted Answer

Happiness

Question 18

A $$2\ \mathrm{kg}$$ object is dropped from a height of $$5\ \mathrm{m}. $$What is its velocity just before hitting the ground? (Neglect air resistance, $$g = 9.8\ \mathrm{m/s^2$})$$

Accepted Answer

$$9.9\ \mathrm{m/s}$$

Question 19

Which of the following statements about electric current is correct?

Accepted Answer

It is the flow of electric charge

Fundamental Topics in College Physics

Guida di studio - Domande di pratica

Study guide - Flashcard