We can crudely model a nitrogen molecule as a pair of small balls, each with the mass of a nitrogen atom, 2.3 x 10-26 length d = 2r = 188 pm. (Eigure 1) kg attached by a rigid massless rod with Figure 1 of 1 Vi BEFORE AFTER

If the earth warms significantly, the polar ice caps will melt. Water will move from the poles, near the earth’s rotation axis, and will spread out around the globe. In principle, this will change the length of the day. Why? Will the length of the day increase or decrease?

In a game of freeze, a person freezes into a position shown below. As a percentage of total body mass, the head is 10%, the two arms are 10%, the trunk is 46%, and the two legs are 34%.  The center of mass for each segment is given as an (x,y) coordinate, both units in cm: head = (130, 150),arms = (110, 75),trunk = (65, 95), andlegs = (0, 35).   Assume the body mass for the individual is 75 kg and their total height is 160 cm.  The length of the feet is roughly 10 cm.    Determine the x and y-coordinates of the person's center of mass for this pose. Show all steps. Show the location of the center of mass on the diagram. Is this pose stable or unstable? Explain.

Chapter 09, Problem 007 In the ammonia (NH3) molecule of the figure, three hydrogen (H) atoms form an equilateral triangle, with the center of the triangle at distance d = 9.40 x 10-11 m from each hydrogen atom. The nitrogen (N) atom is at the apex of a pyramid, with the three hydrogen atoms forming the base. The nitrogen-to-hydrogen atomic mass ratio is 13.9, and the nitrogen-to-hydrogen distance is L = 10.14 x 10-11 m. What are the (a) x and (b) y coordinates of the molecule's center of mass? 1. d. (a) Number Units (b) Number Units

A body of mass M1 has 1/4 times the linear momemtum of M2 if M2 has three times the mass of M1, what the relationship between V1 and V2 ? Select one: а. V1 %3 (4/3) * V2 b. V2 = (1/12) * V1 V1 = 12 * M2 С. d. V2 = (4/3) * V1 V1 = (3/4) * V2 е.

A small block slides at a speed von a horizontal surface. Knowing that h=04 m, determine the required speed of the block if it is to leave the cylindrical surface BCD when 0 = 35". The required speed of the block to leave the cylindrical surface is m/s

To keep the calculations fairly simple, but still reasonable, we shall model a human leg that is 92.0 cm long (measured from the hip joint) by assuming that the upper leg and the lower leg (which includes the foot) have equal lengths and that each of them is uniform. For a 70.0 kg person, the mass of the upper leg is 8.60 kg, while that of the lower leg (including the foot) is 5.25 kg. Find the location of the center of mass of this leg, relative to the hip joint, if it is (a) fully extended, and (b) bent at the knee to form a right angle with the upper leg.

To keep the calculations fairly simple, but still reasonable, we shall model a human leg that is 92.0 cm long (measured from the hip joint) by assuming that the upper leg and the lower leg (which includes the foot) have equal lengths and that each of them is uniform. For a 70.0 kg person, the mass of the upper leg would be 8.80 kg, while that of the lower leg (including the foot) would be 5.30 kg. Take that x-axis is directed horizontally and the y- axis is directed vertically downward. ▾ ▾ Part A ▾ Find the x-coordinate of the center of mass of this leg, relative to the hip joint, if it is stretched out horizontally. Zc = ▾ Part B Submit Yc= Part C ΤΥΠΙΑΣΦ Submit Zc = Find the y-coordinate of the center of mass of this leg, relative to the hip joint, if it is stretched out horizontally. Part D Submit Request Answer Vez A ■ ΠΑΣΦ 6 A • IE Request Answer ΠΑΣΦ A Find the x-coordinate of the center of mass of this leg, relative to the hip joint, if it is bent at the knee to form a right…

A force of 60 pounds acts on the pipe wrench shown in the figure below. 18 in. 30⁰ (a) Find the magnitude of the moment about O by evaluating ||OA × F||. (0 ≤ 0 ≤ 180°)