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The drawing shows a person (weight W = 598 N, L1 = 0.849 m, L2 = 0.398 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
force on each hand N
force on each foot N
questiona common misconception is that current is used up and steadily declines as it progresses through a series of
q1. suppose a constant ratio of 13.60 counts per minute per gram of living matter. a sample of a petrified tree was
A vertical wall (6.1m x 3.5m) in a house faces due east. A uniform electric field has a magnitude of 120 N/C. This field is parallel to the ground an points 33 degrees north of east. What is the electric flux through the wall
A stone has a mass of 3.15 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.941. determine the radius r of the tire
A box weighing 215 N is placed on an incline plane that makes an angle of 350 with the horizontal. Compute the component of the weight perpendicular the plane
You have a great summer job working in a cancer research laboratory. Your team is trying to construct a gas laser that will give off light of an energy that will pass by the skin but be absorbed by cancer tissue.
A magnesium surface has a work function of 3.68 eV. Calculate the maximum kinetic energy of the ejected electrons
A singly charged positive ion has a mass of 2.53 10-26 kg. After being accelerated through a potential difference of 238 V, Calculate the radius of the path of the ion in the field
In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is ? = 32.5°, What is the terminal speed
A raindrop of mass 3.27 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance, What is the work done on the raindrop by air resistance
A negative point charge q1 = -4 nC is on thex-axis at x = 0.60 m. A second point charge q2=-24nC is on the x-axisat x = -1.20 m. What is the net electric field at the origin
A sphere with radius 0.190 has density that decreases with distance from the center of the sphere according to p = 35,000 kg/m^3 - (9,250 kg/m^4)r
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