Physics Spring Semester Exam 2019

Which action makes use of a magnetic force?

• Using a compass to find North

• Using an electric stove to heat a pot of water

• using a pulley system to lift your spirits on the exam

• a students measures their textbook using a triple beam balance

Tags

NGSS.MS-PS2-3

Within the Photoelectric effect the photon frequency will be steady for a short time before it ____________ as the Electron Energy suddenly ____________ ejecting off electrons

• Decrease, Rise

• Increase, Fall

• Increase, Rise

• Decrease, Fall

You are at a friend's birthday party outside when a cold front rolls in. You begin to notice that the balloons are shrinking. The Decrease in balloon size is most likely due to

• an increase in molecular potential energy of the air molecules in the balloon.

• a decrease in the speed of the air molecules in the balloon.

• A revelation prophesied by the ancient balloon men of the coming apocalypse

• cold air in the balloon producing an increase in tire volume.

Pet robots powered by solar cells are an application of __________.

• Nuclear Fusion

• The Photoelectric Effect

• Newton's First Law

• Beta Decay

A material that restricts the flow of electrons would be considered a ____________.

• good insulator

• good conductor of electricity

• good source of nuclear radiation

• good source of electromagnetic radiation

As you and your friend leave the theatre together you realize he left his hat in your car and you sound your horn as he is moving away from you. Compared to the frequency of the horn when the cars are stationary, the frequency heard by your friend will be __________.

• Lower

• Higher

• The same

• lower then higher

Coulombs Law and the Law of Universal Gravitation are very similar in their construction. If the Gravitational Force between a 100kg man and Earth is 980N, then how close must two photons (1.6 x 10^19 C) be to generate the same amount of force? (Coulombs Constant = 9.988 x 10^9)

• 2.35 x 10^31 m

• 4.85 x 10^22 m

• 1.47 x 10^10 m

• 1.21 x 10^5 m

Which of the following statements best describes an electromagnetic wave with a short frequency?

• It has a long wavelength and can travel in a vacuum.

• It has a short wavelength and can travel in a vacuum.

• It has a long wavelength and can only travel in a medium.

• It has a short wavelength and can only travel in a medium.

A truck with mass "2m" is traveling at a velocity of "v". A car with mass "m" is traveling at a velocity of "2v". Which vehicle as the highest kinetic energy?

• The Truck has twice the kinetic energy

• The car has twice the kinetic energy

• Their kinetic energy is the same

• The car has three times the kinetic energy

Two charges separated by a distance of 1 meter exert a 20-N force on each other. If the charges are pulled to a 2 meter separation distance, the force on each charge will be 

• 10 N
• 5 N
• 2.5 N
• 40 N

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5