Physics

i. Project Fili: an X-ray telescope (λ≈0.1−1 nm) in Antarctica for studying black holes. ii. Project Kili: a visible-light telescope (λ≈400−700 nm) in Hawai’i for studying galaxy formation.

Imagine that you are in charge of allocating funding from the national science foundations to build one or more proposed observations. For each of the pair below determine which one would be better to fund and clearly explain your reasoning. EXPERT ANSWER Its better to fund the project kili. Project Kili involves setting up a visible …

i. Project Fili: an X-ray telescope (λ≈0.1−1 nm) in Antarctica for studying black holes. ii. Project Kili: a visible-light telescope (λ≈400−700 nm) in Hawai’i for studying galaxy formation. Read More »

Question 3 4 pts I am delivering pizza on Mars. I am given a pizza at Hal’s Gourmet Pizza located on Mars’ Moon Phobos to take down to the surface of Mars. The Pizza weighs 1 Newton (1N) on Phobos. The acceleration due to gravity on Phobos is 0.0057 m/s2. The acceleration due to gravity on the surface of Mars is 3.7 m/s2. How much will the pizza weigh when I get down to the surface of Mars? 0.0057 Newtons O 3.7 Newtons 650 Newtons 155 Newtons O 0.0015 Newtons

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QUESTION 1 1.1 Discuss the principles of work design: the workplace. 1.2 Compare and contrast the three different design strategies. (20) (12) [32] QUESTION 2 A proper working environment is important not only from the standpoint of increasing productivity and improving the physical health and safety of the workers, but also for promoting worker morale and consequent reductions in worker absenteeism and labour turnover. Discuss all the problem areas. (35) [35]

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3. The figure below shows the equipotential lines created by a distribution of source charges (not pictured here) along with five locations in space (a-e). a. At each of the points indicated, draw the electric field vector (magnitude and direction) b. An ion is placed, initially at rest at point c and allowed to move solely due to the electric force. At a later time, the ion is at point b. Is the ion positively or negatively charged? What is that ion’s speed at point b? Explain your reasoning c. At what location on the figure is the ion traveling the fastest? Explain. d. If instead, you doubled the charge on the ion: how does the lon’s speed at point b change from your previous answer? how does the fastest speed of the ion change from the previous case? (be as numerical as possible, e.g., “double) e. A different charged object gains 5 J of kinetic energy as it moves from point b to a What is its charge (and make sure to include if it is positive or negative)? f. When an electron is located at point d, it has velocity vo to the right. The electron reaches pointe before it turns 300 V 100 V around. At a later 1200 V time, the electron’s velocity is 2v, to the 1 lllclla left. At what location on the figure is the IIII!! electron located 250 v when this happens? 250 V Is there more than one answer? 300 V 200 V le 50V 350 v 156 v

EXPERT ANSWER (a). The strength of the field is shown by the no. Of field lines around that point. Maximum electric field is at point c.

hw app2_102.pdf File C/Users/admin/Downloads/hw_apP2_102.pdf To 2 11 of 14 a + A Read aloud Draw Highlight Erase B D Page view 17. A car moves at constant speed of 40 kmh along the road shown in Fig. 17.1. The radius of curvature at A is 350 m and the total acceleration of the car at B is 1.0 ms-2 5 p (a) Find the total acceleration of the car at Fig. 17.1 i. A [2] ii. C. [1] [2] (b) Find the radius of curvature at B. Type here to search EH 68°F Clear A 123 AM 10/22/2021

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A certain crystal is cut so that the rows of atoms on its surface are separated by a distance of 0.352 nm. A beam of electrons is accelerated through a potential difference of 175 V and is incident normally on the surface. If all possible diffraction orders could be observed, at what angles (relative to the incident beam) would the diffracted beams be found? (The surface acts as a diffraction grating where maxima occur when d sin? = n?, n = 1,2,3…)

A certain crystal is cut so that the rows of atoms on its surface are separated by a distance of 0.352 nm. A beam of electrons is accelerated through a potential difference of 175 V and is incident normally on the surface. If all possible diffraction orders could be observed, at what angles (relative to …

A certain crystal is cut so that the rows of atoms on its surface are separated by a distance of 0.352 nm. A beam of electrons is accelerated through a potential difference of 175 V and is incident normally on the surface. If all possible diffraction orders could be observed, at what angles (relative to the incident beam) would the diffracted beams be found? (The surface acts as a diffraction grating where maxima occur when d sin? = n?, n = 1,2,3…) Read More »