Physics Exam II MC

A charge of -2 10-6 C (left) and a charge of 5 10-8 C (right) are separated by 15 cm on the x-axis. What is the direction of force on the right charge?

Left

A charged ball of moving to the right enters a magnetic field directed into the page. The path that the ball follows is best described as...

Semi-circular

A charged ball of moving to the right enters a magnetic field directed into the page. The speed of the ball after entering the magnetic field is best described as...

staying constant

Parallel wires carrying current in the same direction are ______ , while parallel wires carrying current in the opposite direction are _____.

attracted, repelled

A transformer has 15 turns of wire in its primary coil and 60 turns on its secondary coil . What kind of transformer is this?

step up

To make the pickup coil light up, select all of the following that are true:

all of them

At the moment the centers of two equal but opposite pulses are aligned (one up, one down), which of the following is true?

The pulses negate each other

At the moment the centers of two equal upright pulses are aligned, which of the following is true?

The pulses add to make one pulse of twice the amplitude

When amplitude increases, energy ______

increases

For light, changing amplitude affects (choose all correct answers):

energy and brightness

For light, changing frequency affects (choose all correct answers):

wavelength and color

For sound, changes in amplitude affect (choose all that are correct):

volume and energy

For sound, changes in frequency affect (choose all that are correct):

pitch and wavelength

When frequency increases, wavelength _______.

decreases

A light going from air into a glass of water is seen to bend in its path.  This bending is an example of...

refraction

A magnet moves perpendicularly towards a wire loop, and the current in the wire loop increases. The phenomenon that caused the current is called...

Induction