A PhD student in Condensed Matter physics and winner of Outstanding TA award in the Physics & Astronomy department. I have a passion for teaching undergraduate level physics with a focus on tailoring content for STEM vs non STEM majors.
(II) Show that the total angular momentum is zero for a filled subshell.
Consider the following properties of a wave and its behavior.$$\begin{array}{l}{\text { (A) Amplitude }} \\ {\text { (B) Frequency }} \\ {\text { (C) Wavelength }} \\ {\text { (D) Wave speed }} \\ {\text { (E) Superposition }}\end{array}$$The brightness of light and the volume of sound are associated with which wavecharacteristic?
Consider the following properties of a wave and its behavior.$$\begin{array}{l}{\text { (A) Amplitude }} \\ {\text { (B) Frequency }} \\ {\text { (C) Wavelength }} \\ {\text { (D) Wave speed }} \\ {\text { (E) Superposition }}\end{array}$$The pitch of a musical instrument and the color of light are associated with whichwave characteristic?
Directions: This section of the exam consists of questions or incomplete statements followed by five possible answers or completions. Select the best answer or completion, and fill in the corresponding bubble on the answer sheet.
A mass initially at rest undergoes a uniform acceleration a during a time interval $t$. The mass reaches a speed v when it has been displaced a distance $x$. The mass continues moving with acceleration a. What are the speed and displacement of the mass when the time has doubled, 2$t$?
$$\begin{array}{lll}{} & {\text { Velocity }} & {\text { Displacement }} \\ {(A)} & {2 v} & {\sqrt{2} x} \\ {\text { (B) }} & {\sqrt{2}} & {2 x}\\ {\text { (C) }} & {2 v} & {2 x} \\ {\text { (D) }} & {2 v} & {4 x} \\ {\text { (E) }} & {4 v} & {4 x}\end{array}$$
Which is NOT true regarding acceleration?(A) Some accelerating objects have constant speed.(B) Acceleration is the rate of change in velocity.(C) Acceleration is the slope of a position-time graph.(D) Acceleration can be positive, negative, or zero.(E) Acceleration can involve a change in either speed or direction.
A ball is thrown horizontally with a speed $v$ drops a distance $y$ and moves horizontally a distance $x .$ If the ball is thrown with the same horizontal speed $v$ from a height of $2 y,$ what is its new horizontal displacement?(A) $X$(B) $\sqrt{2} X$(C) 2$x$(D) 4$x$(E) 16$x$
7. Indiana Jones, who is 75.0 kg, starts from rest and slides down a stiff rope that exerts a constant friction force of 300 N. A spring-loaded 20.0 kg platform is 4.00 m below him. The spring itself is massless and has a spring constant of 4,000 hI/m.(a) What is Indiana's speed right before colliding with the platform?(b) What is the maximum distance the spring is compressed if the friction force acts during the entire slide?
12. A dog walks at a constant angular speed of 0.750 rad/s around the circumference of a carousel that is initially at rest. The dog spots a bone on the edge of the carousel one-third of a revolution in front of him. At the instant the dog spots the bone, the carousel begins to move in the direction the dog is running, with a constant angular acceleration of 0.015 rad/s2.(a) How long will it take for the dog to catch up to the bone?(b) The dog mis5es the bone but keeps running in the same direction at the same speed. How long will it take for the dog to catch up to the bone the second time around?
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Use the given volume and radius of a cylinder to express the height of the cylinder algebraically. (Simplify your answer completely.)Volume is π(25x^3 - 165x^2 - 69x - 7), radius is 5x + 1
A study indicates that 78% of teenagers have have a tattoo. You randomly sample 7 teenagers. Find the probability that more than 5 have a tattoo.
