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If your biceps attach to your forearm at 0.0468 m from the elbow and make an angle of 27 degrees with the vertical while a 31.4 kg mass is held in your hand 30.32 cm from the elbow, what force is exerted by the biceps muscle? ignore the mass of the forearm. originally the forearm and and elbow create 90 degree angle
compute the distance from the central maximum to the first bright region on either side of the central maximum.
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
A stationary pion (mass m?) decays into a muon (mass mµ) and a neutrino (mass m? ? 0, i.e. treat as massless). How fast does the muon go
in a vacuum, a certain light has a wavelength ?0 = 589 nm and travels at speed c = 3.00x10^8 m/s. What is its speed if traveling in sodium chloride
In a movie, Tarzan evades his captors by hiding underwater for many minutes while breathing through a long, thin reed. calculate the deepest he could have been
A ray of light passing through air is incident on a piece of quartz (n=1.46) at an angle of 25 degrees. Calculate the deviation d of the ray as it emerges back into the air
The wire in a 150 W aquarium heater has a diameter of 0.12 mm and is made of iron, What resistance should the wire have while the heater is operating
A 130 g ball with speed 7.5 m/s strikes a wall perpendicularly and rebounds in the opposite direction with the same speed. find the magnitudes of the average force on the wall
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 4.41 × 10-11 m. Determine the magnitude..
A body is suspended vertically from an ideal spring of spring constant 3.4 N/m. The spring is initially in its relaxed position. What is the maximum kinetic energy of the body
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42
A 0.280 kg ball is dropped from rest at a point 1.35m above the floor. The ball rebounds straight upward to a height of 0.780 m. What are the magnitude and direction of impulse of the net force applied to the ball during the collision with the flo..
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