Hotes and PracticeSudent Cepy Leen 10 Oomatry JHonon CRM 12 WardFleHmeInsetLayuRafeencesMafingslaviewV Tel mewhat yau want to deFranc GendalensfA areVi2. Circle the capital letters below that have rotational symmetry?АВ СD E F GHIJKLMNOPQRSTUVWXYZEndDeleBack356EITY

Rotational symmetry is the property of a shape that it looks the same after semi rotation.

Answered: 2. Circle the capital letters below…

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2. Circle the capital letters below that have rotational symmetry? ABCDEF G HIJKLMN OPQRSTU VWX Y Z

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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2. We can apply the laws of conservation of linear momentum and angular momentum to the description of the motion of rigid bodies because A. Forces that maintain constant distances between different pairs of point masses are internal forces (i.e. forces of constraint) B. Forces of constraint come in pairs and obey Newton's third law (i.e. they are equal and act along the same line of action) c. In any displacement the relative distances and the orientations of different particles remain the same with respect to each other D. No network is done by the internal forces or the forces of constraint E. All of the above are correct F. None of the above is correct
A slender rod with mass m, = 1.05[kg] and length = 1.65[m] is released from rest at a horizontal position as shown and starts rotating due to gravity about the black hinge. The hinge is placed a distance & above a point mass m = 0.680[kg]. l a. b. l C. h What is the angular velocity of the rod right before it collides with point mass? Suppose that point mass sticks to the end of the rod after collision. What will be the angular velocity of the rod and mass system right after collision? Show that if the bottom of the rod is a distance h above the ground, then the center of mass of the rod is a distance+above the ground. d. What will be the maximum height the bottom of the rod reaches after the collision?
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The uniform rod shown has a weight of 14.0 N. What is the magnitude of the normal force on the surface?A. 7 N B. 14 NC. 20 N D. 28 N
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5. I. In evaluating the moment of a planar lamina, a horizontal strip cannot be used as a representative area.II. The moment of any planar lamina is the product of the mass of the region and its centroid. a. Both statements are true b. Both statements are false c. Statement I is true, the latter being false d. Statement I is false, the latter being true
QUESTION 6 A main sequence star of mass, M, and radius, R, collapses to a white dwarf star with a radius 1.0% as big as the original star. If w is the angular velocity of the original star, what is the angular velocity of the white dwarf star? Approximate the star to be a uniform solid sphere. а. 10,000w b. 1,000w С. 5,000w d. 20,000w е. 50,000w
A star with a mass of 3.41 x 1030 kilograms and a radius of 8.20 x 108 meters rotates on its axis once every 33 days.a. What is the angular momentum of the star? Include units in your answer. More information. b. After running out of fusible matter, the star collapses under its own gravity to form a pulsar with a radius of 24.1 kilometers. What is the period of rotation of the pulsar? Include units in your answer. More information. PLEASE ANSWER IN HANDWRITING
4. In the Bohr model of atomic hydrogen, an electron has a mass of 9.1 × 10-31 kgm revolves about a proton in a circular orbit of radius 5.3 × 10-¹¹ m. The proton has a positive charge equal in magnitude to the negative charge on the electron and its mass is 1.67 × 10-27 kgm. (a) What is the radial acceleration of the electron? (b) What is its angular velocity?
4. For this problem, you are free to use a table for moments of intertia in your calculation. For this problem, please reference the image below. You are working in your machine shop in Kalamazoo, MI, where you construct the item in the image below. It consists of a tungsten disk of mass 2.4 kg and radius 50 cm. Mounted on this disk is a silicon carbide ring of mass 1.2 kg. This ring has an inner radius 20 cm and outer radius 30 cm. The disk rotates about an axis through it’s center at a rate of 12 rev/s (a) What is the moment of inertia of this system? (b) What is the rotational kinetic energy of this system? axis 50 cm 30 cm 20 cm
If the rotational curve (orbital speed versus distance from center) of a spherically symmetric object is flat, what is implied about the mass density? A. It remains constant at all distance from center. B. It increases with distance from center. C. It decreases with distance from center. D. It remains zero far from the center because the distribution is essentially a point mass. Is the answer B? Orbital velocity is still the same as the distance from the centre increases. By Mr = v2r/G, Mass increases with increasing radius when velocity is kept constant. So, galaxies with flat rotational curves indicate they contain large amounts of dark matter, especially further out from the centre. Thank you for clarifying my understanding!
Question 3 In the methane molecule, CH4, each hydrogen atom is at the corner of a regular tetrahedron with the carbon atom at the center. If one of the C-H is in the direction of A=î+j+k B=î-ĵ-k. results to an angular bond of approximately 109⁰ for a static frozen molecule. However, the molecule we can encounter everyday continuously vibrates and interact with the surrounding causing its bond vector to vary slightly. According to a new spectroscopy analysis, the adjacent bond vectors was found to be A = 0.93i+1.03j + 0.82k B = 0.85i + -0.82j + -1.01k and an adjacent C-H bond is at the direction What is the angle (in degrees) between the bonds based on this new data? Note: Only 1% of error is permitted for the correct answer.