There are two forces on the 14.4 kg crate in the overhead view of the figure below, but only one is shown. For F1= 3.6 N, a= 14.4 m/s?, and 0=34.3°,The second force as a magnitude is: y Select one: O a. 209.41 N Ob. 120.45 N Oc. 171.30 N Od. 43852.47 N sneed. If the coefficient of the static (m/s) when
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- H.W: In the Boher model of the hydrogen atom an electron moves at 2.19*10'm/s in an orbit of radius 5.29*10" centered on a proton. (a)what is the centripetal force on the electron? (b)what is the number of revolutions made each second? Ans. (a)9.06 10"ms (b = 6. 58 - 1015 1/s H.W: A ball is thrown with an initial speed voat an angle e below the horizontal from rooftop 44m above the ground. It lands 2sec later at a point 32m from the base of the building. Find v, and 0 Ans. 8 = -37.32v, = 20. 1m/sH.W: In the Boher model of the hydrogen atom an electron moves at 2.19*10m/s in an orbit of radius 5.29*10" centered on a proton. (a)what is the centripetal force on the electron? (b)what is the number of revolutions made each second? Ans. (a)9.06*10"m/s (b = 6. 58 + 1015 1/s H.W: A ball is thrown with an initial speed voat an angle 0 below the horizontal from rooftop 44m above the ground. It lands 2sec later at a point 32m from the Vor base of the building. Find vo and 0 Ans. 0 = -37.32vo = 20. 1m/s H.W: A ball thrown up from a rooftop of height 40m lands on ground in 4s. (a)what is its maximum height above the ground? (b)what is its velocity 15m below the rooftop? Ans. (a)44.7m (b) v = -19.65 4 H.W: An object is thrown horizontally at 20m/s from a cliff top 45m above sea level. Find (a)the time to land; (b)the angle at which it hits the water; (c)the speed at which it hits the water. Ans. (a)3.03s (b)Ø = -54.73 (c)35.79m/szain IQ "ll N N N 89% Di 9:23 ぐ VY Quiz of Anal.. Misan University College of Science Department of Physics Second Stage Quiz of Analytical Mechanics Q: If Ã= fi+2f j and B= fi+2f j+3f k, f is constant, find the angle between these two vectors? Maysam 12:01p äelul 21.02.11 O O
- If the magnitude of the vector product of two vectors a and b are are equal to ab, then what do we know about a and b? a. They are parallel O b. they are in different directions O c. they are perpendicular O d. they are antiparallelHelp | System Announcements Z Your answer is partially correct. Try again. For the vectors in the figure, with a = 3.60, b = 2.7o, and c = 4.50, calculate (a) a b, (b) a.2, and (c) b.7. (a) Number This answer has no units v Units (b) Number14.02 This answer has no units v Units (c) Number This answer has no units v Units Click if you would like to Show Work for this question: Open Show Work archIf a vector force F = 7 i +10 j +4 k [kN], what will be the coordinate direction angle with the Y-axis: Select one: O a. B = 141.125° O b. B = 83.875° O c. B = 38.875° O d. B = 45°
- Question: The polar coordinates of a point are 50m and . Then, what are its Cartesian coordinates? A. 2.75i+ 4.763j m, B. -2.75i- 4.763j m, C. 2.75i - 4.763j m, D. 4.763j m, E. -2.75i + 4.763j m,If the magnitude of the vector product of two vectors a and b are are equal to 0, then what do we know about a and b? O a. They are parallel O b. they are in different directions Oc they are in different planes O d. they are perpendicular1. A force is given as Ẻ = xy² x + (x²y + y) ŷ. Calculate § F. dỉ along the circumference of a circle of radius 3.
- The figure shows four vectors A, B, C and D having magnitudes 12.0 m, 10.0 m, 8.0 m, and 4.0 m, respectively. The sum of these four vectors is y B 30° + 30° X D 1076 2 48432 W S mand X M O a. 16.4 m at an angle 77.8° with respect to +X-axis. Ob. 16.4 m at an angle 12.3° with respect to +X-axis. c. 19.5 m at an angle 77.8° with respect to +X-axis O d. 19.5 m at an angle 12.30 with respect to +X-axis. O e. 8.20 m at an angle 77.8° with respect to +x-axis. F2 s # 3 E D 31, C M 80 $ 4 R F a FA % 5 V #tv ♫ T o FS G 6 B c Fo Y H & 7 N F7 p U 8 J DII FB 1 M ( 9 K F9 O A ) O 4 F10 L e e P il V F11 { 11 + [ C F12 command option OThe grid runs from -5 to 5 on both axes. Drawn on this grid are four vectors, labeled A⃗ A→ through D⃗ D→. This problem will ask you various questions about these vectors. All answers should be in decimal notation, unless otherwise specified. A. What is the xcomponent of A→? B.What is the y component of A⃗ ? C.What is the y component of B⃗ ? D.What is the x component of C⃗ ? E. In ordered pair notation, write down the components of vector B⃗ F. In ordered pair notation, write down the components of vector D G.What is true about B⃗ and D⃗ ? They have different components and are not the same vectors. They have the same components but are not the same vectors. They are the same vectors.The components of vectors ?⃗ and ?⃗ are given as follows: Ax = 5.1 Bx = -2.6 Ay = -5 By = -4.3 What is the magnitude of vector sum ? + ? choices: a. 2.5 b. 5.1 c. -9.3 d. 9.6 The equilibrant force is 5500 Dynes in magnitude and in the direction of 30 degrees South of East. Find the resultant force and direction. 5500 Dynes 170 degres 5500 Dynes, 150 degrees 5500 Dynes, 130 degrees 5500 Dynes, 30 degrees