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In exercise physiology studies, it is sometimes important to determine the location of a person's center of gravity. This can be done with the arrangement shown in the figure below. A light plank rests on two scales that read Fg1 = 450 N and Fg2 = 260 N. The scales are separated by a distance of 2.00 m. How far from the woman's feet is her center of gravity?
The pendulum of a regulator clock consists of a mass of .12kg at the end of a massless wooden stick of length .44m. What is the speed of the mass when at its lowest point
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
The height of a door is measured by four people and their measured values are 217.0 cm, 217.9 cm, 217.3 cm, and 217.6 cm, What is the standard deviation for the four measurements
question 1 polymer diffusion the figure below indicates the result of a particle tracking experiment where lateral
A tow truck pulls a car 5.00 \rm km along a horizontal roadway using a cable having a tension of 850 \rm N. How much work does the cable do on the car if it pulls horizontally
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle.
A carpenter is driving a nail into a board. The 1.25 kg hammer moves at 8.85 m/s when it strikes the nail. What is the change in length of the nail
A top loading washing machine has a spin cycle that rorates at frequency f. The spinning drum that holds the clothes has a radius R, Find an expression for the magnitude of the wall's normal force acting on the piece of clothing as the drum spins
what is the new value of energy stored in it. What is the force that is acting between them.
What is an expression for the maximum displacement of m2
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 445 Hz, calculates the speed of the train
The position of a particle in cm is given by x = (7) cos 10?t, where t is in seconds. What is the amplitude of the particle's motion
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