The homogenous 79 kg disk supported by the rope AB rests against a rough vertical  wall. Determine the following:   21. Determine the force acting on the cable. Neglect friction.   22. Determine the force acting on the cable. Use coefficient of friction = 0.70

3. The HVL of a Co-60 is approximately 9mm of lead. What is the approximate x=7cm = 70 transmission factor for a 7cm block of lead? What is the linear attenuation = 9mm coefficient of lead in this Co-60 beam? m %rtif

- reg YEARY PC PB YD TEMP PRP Source df MS Number of obs 29 F(6, 22) = 1777.52 Model 2025.82114 337.636856 Prob > F 0.0000 = Residual R-squared Adj R-squared 4.17886221 22 .189948282 0.9979 0.9974 Total 2030 28 72.5 Root MSE = .43583 YEAR Coefficient Std. err. t P>|t| [95% conf. interval] Y .0640617 .0523215 1.22 0.234 -.0444465 .1725699 PC -.0179212 .010265 -1.75 0.095 -.0392094 .003367 PB .0058838 .0050092 1.17 0.253 -.0045047 .0162722 YD .0978191 .0142261 6.88 0.000 .068316 .1273222 TEMP .0021932 .0054143 0.41 0.689 -.0090354 .0134218 PRP .0087202 .0091906 0.95 0.353 -.01034 .0277804 cons 1966.475 1.727965 1138.03 0.000 1962.892 1970.059

Please help with my physics hw. (See attached images)

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enlar Randi Baldwin 日 Clss |□ 02/ 4Stru EPhy 4th E 4th E Brd 1st M InbcL com/web/viewer.html?state=%7B"exportlds"%3A%5B 1K8ubv6kBbwyV3WQ9RyNrV5-InggpRp06 > Pandora O YouTube M Gmail A Classes 4 DRIVE EH Gizmo a Quzizz e SMomentum RB Name Physical Science Momentum practice I p = mv 1 A 100K9 man is running at 5.6m/s. What is his momentum? 2 Scott McCartney, a US Olympic Ski Team member was going 39 m/s (88 miles per hour) in the downhill ski race when lost his balance and fell. He has a mass of 65Kg What was his momentum? 3. How fast would a ping pong ball (mass 0.0027Kg) have to be traveling to have the same momentum as Scott McCartney just before he fell? (Use momentum from problem 2) If a 40 Kg object has a momentum of 400K9*m/s, how fast is it traveling? 5 If an object traveling at 20 m/s (about 44 miles per hour) has a momentum of 800KG*m/s, what is the object's mass? 19 Participants Chat Share Screen Reco

1.1) A star has a radius of three times the Sun's radius, and an average number density of ions a factor of 1.75 higher than that of the Sun. How much time does it take on average for photons to travel across this star compared with the Sun?

Wth the informetion below complek the fabla Infrema ion : 001 =7 me - D. 669 L - 300 cm M - m/Le - ? Compete the tabk mlg) T-mg L- VT 3

5. Derive the equation to get the message from DSB-SC signal using homodyne receiver.

CO 12.1 3 Paragraph 5. C-2500 1n 6 7 PC 1.1, 1.2, 1.3, 2.1, 2.3, 2.4, 2.5 IN 8 1 9 I 10 I Styles 11 I 12 13 N 15 05: A spectrophotometer measures the concentration of a sample dissolved in water by shining a light through it and recording the amount of light that emerges. In other words, if we know the amount of light that is absorbed, we can calculate the concentration of the sample. For a certain substance the concentration (in moles per litre) is found by using the formula: (-) Where the I, is the intensity of the incident light and I is the intensity of light that emerges. Find the concentration of the substance if the intensity I is 70% of Io. Use an appropriate standard engineering software such as MATLAB, CAS calculator, programmable calculator, Excel software, to solve and analyse this program mathematically. 16.