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2.0 kg block is attached to a spring with spring constant 22 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 46 cm/s. (a) What
A spring with spring constant 15.0 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 3.0 cm and released. If the ball makes 55 oscillat
The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maxi
Let P be a point on the peripheryof the front wheel. One can show that the x and ycoordinates of P are described by the following functions of time and Determine the expressions for the velocity, sp
A flat metal washer is heated. As the washer's temperature increases, what happens to the hole in the center? A flat metal washer is heated. As the washer's temperature increases, what happens to th
The Young's modulus for wire A is 1.80 x 1011 Pa and for B is 1.20 x 1011 Pa. If the weight suspended from wire A is 2.00 kg, what would the weight attached to wire B need to be to produce a) equal
A solid lead cylinder and a solid platinum cylinder have the same mass. What is the ratio of the length of the platinum cylinder to the length lead cylinder if their diameters are the same?
Find (a) the magnitude of the resultant vector A+B+C+D , and (b) its direction as a positive angle relative to due west.
What is the net force exerted by these two charges on a third charge = 50.5 placed between and at = -1.230 ? Your answer may be positive or negative, depending on the direction of the force.
Would you get the same relationship between distance up the ramp parallel to the ramp rather than height and stopping distance?
A horse walks in a 24 ft diameter circle, making 144 trips around the circle in one hour. Using the currently accepted value of 746 watts for 1 horsepower, calculate the force in pounds with which
Vector A is in the direction 30.0 clockwise from the -y-axis. The x-component of A is Ax = -16.0m 1. what is the y-component of vector A ?
A 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of
The wire is fastened at its upper end and hangs vertically. How great a weight can be hung from the wire without exceeding the proportional limit? How much does the wire stretch under this load? Wha
The man hears the sound of the splash 2.8 s after he releases the rock from rest. The speed of sound in air (at the ambient temperature) is 336 m/s. How far below the top of the well is the surface
Question: How does the falling mass play a role? will twice the mass require twice the stopping force if it is brought to a halt in the same time?
Object A is acted on by only object B. The mass of object A is 20.0 kg and its acceleration is 4.00 m/s2 west. Object B is acted on by two forces, the force of object A on object B and another unkn
Question: The breaking of the string most certainly plays a role in the bungee experiment. How does the length of the string play a role?
Two electric charges, q1 = +18.8 nC and q2 = +10.8 nC, are located on the x-axis at x = 0 m and x = 1.00 m, respectively. What is the magnitude of the electric field at the point x = 0.539 m, y = 0
Question: A 60.0-kg person rides in an elevator while standing on a scale. The scale reads 400 N. What is the acceleration of the elevator?
Question: A 5.00-kg object is initially at rest. The object is acted on by a 9.00-N force toward the east for 3.00 s. No force acts on the object for the next 4.00 s. How far has the object moved d
Question: Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?
What is the magnitude of the acceleration of an electron at a point where the electric field has magnitude 6495 N/C and is directed due west?
Assume you pay $0.10 per kW-hour for electricity. How much would it cost just to keep the hot water inside the heater for one week? If the heat lost is 6.87*10^12.
A small sphere with a charge of -0.571 ?C is placed in a uniform electric field of magnitude 1.20 x 106 N/C pointing to the south. What is the magnitude of the force on the sphere due to the electr