An object is cut from a uniform block of wood, 3.00 cm thick, so that the height of the top edg e is described by the equation y=19(x-3)2. The left side of the object is 1.00 m tall, and it extends to 3.00 m long. The left side is placed on the y-axis and the bottom side is placed on the x-axis. Find (a) the x-coordinate and (b) the y-coordinate of its center of gravity
answer :
(a) 0.750 m
(b) 0.300 m
An object is cut from a uniform block of wood, 3.00 cm thick, so that the...
(a)A ball is attached to a thread of length L = 16.8 cm
and suspended from the ceiling, as shown in the figure. A uniform
electric field points to the right in the figure. Whenθ = 15.5°,the ball is in equilibrium. Find the net charge on the ball (in
µC).A ball is attached to a thread of length Land suspended
from the ceiling. The thread makes an angle θ with the
normal line from the ceiling, such that the thread...
EXERCISE HINTS: GETTING STARTED I'M STUCK! Use the values from PRACTICE IT to help you work this exercise. If a fourth particle of mass 2.26 kg is placed at (0 m, 0.187 m) in Figure (a), find the x- and y-coordinates of the center of gravity for this system of four particles. Xcg = y cg = Need Help? Read It Talk to a Tutor PRACTICE IT Use the worked example above to help you solve this problem. Consider the...
4. y (m) Refer to the diagram (a cutaway side view-not to scale) An enclosed tank, with vertical glass sides and horizontal bottom and top, is nearly full of water. The tank's six panels are all made of the same glass, with uniform thickness d glass of Resting on top of the tank is a solid half-cylinder of glass (with its end facing out of the page), so that its rectangular surface is horizontal and facing upward. The x-y position...
Consider an object with s=12cm that produces an image with s′=15cm. Note that whenever you are working with a physical object, the object distance will be positive (in multiple optics setups, you will encounter "objects" that are actually images, but that is not a possibility in this problem). A positive image distance means that the image is formed on the side of the lens from which the light emerges.Part AFind the focal length of the lens that produces the image...
Learning Goal: To be able to find the center of gravity, the center of mass, and the centroid of a composite body. A centroid is an object's geometric center. For an object of uniform composition, its centroid is also its center of mass. Often the centroid of a complex composite body is found by, first, cutting the body into regular shaped segments, and then by calculating the weighted average of the segments' centroids. An object is made from a uniform...
l missed an important information about block. So I upload
again my question... please solve (3) and (4). I f I use a program
to solve it, please teach me the name of program and the method.
please teach me in detail. thank you :)
a rectangular shape Aluminum block(L=10mm, D=3mm) has well
insulated top and bottom. The left surface has thermal boundary
condition, and the right surface has convection boundary
condition.
* the surface temperature Ts=100℃, the ambient air...
(1) Suppose you lift a stone that has a mass of 5.3 kilograms off the floor onto a shelf that is 2 meters high. How much work have you done? Joules (2) Suppose you lift a laptop that weighs 3.2 pounds off the floor onto a shelf that is 4 feet high. How much work have you done? foot-pounds (3) The force on a particle is described by 9x^3−1 pounds at a point xx feet along the x-axis. Find the...
Electric field.
6. An electron (charge q has a uniform field E- -Ej where E is a positive constant. The electron has mass m and, as shown below, is initially moving exactly horizontally with an initial velocity vo -Voi. The chamber is a horizontal distance L long. e) enters a capacitor which (a) Determine the r and y components of the electron's acceleration in terms of the given variables Fet (b) Determine the amount of time the electron spends in...
Bob places a neutrally charged conducting ball next to a large, charged plate. The conducting ball is weakly attracted to the plate. What is the net charge on the plate? 1. a) Positive b) Negative c) Neutral (i.e., zero charge) d) Either positive or negative, but it is impossible to tell which A +1 C charge is at the origin, and a second +1 C charge is at position (x,y)-(2 m, 0). How much work is required to move the...
14.13 (a) only
Spreadsheet from HW 3:
Manning:
1. Numerically solve for the normal depth using either MS-Excel or Matlab. Hint: your spreadsheet for critical depth in HW3 is a good place to start. 14.13 The channel in Problem 14.7 is excavated in smooth rock to a bed slope of 0.2%. Deter- mine the (a) normal depth of flow, (b) critical slope, and (c) state of flow in the channel. 14.7 A trapezoidal channel has a bed width of 3.5...