Physics Work Quiz

According to physicists, when is work said to have been done on an object?

• When you are thinking hard about a problem

• When a force is applied to an object and it does not move

• When a force is applied to an object and the object moves in the direction of the applied force

• When you are doing your homework

What is the formula for work, W, as defined in physics?

• W = force + distance

• W = force / distance

• W = force x distance

• W = force - distance

What is the SI unit of work?

• Newton (N)

• Meter (m)

• Newton-meter (N·m)

• Joule (J)

What is the formula for work done when a constant force pushes an object through a displacement?

• W = F/d

• W = F + d

• W = Fd

• W = F - d

What is the SI unit of work?

• Newton

• Pascal

• Joule

• Watt

Work is the product of which two physical quantities?

• Speed and time

• Force and velocity

• Force and displacement

• Mass and acceleration

Who is the joule named in honor of?

• Isaac Newton

• Albert Einstein

• James Prescott Joule

• Nikola Tesla

What is the equivalent work in joules (J) of lifting a medium-sized apple through a height of 1 meter?

• 10^3 J

• 10^7 J

• 1 J

• 6000 J

According to Table 6.1, which activity corresponds to an equivalent work of 10^18 J?

• Annual U.S. energy use

• Mount St. Helens eruption

• Burning 1 gal of gas

• Daily human food intake

How much work is done when breaking a bond in DNA, as per the table provided?

• 10^4 J

• 10^-7 J

• 10^-3 J

• 10^-20 J