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Question: A strangely transparent human arm is holding up a weight of mass m_w = 1.5kg. The sizes of the bones and attachment-points for the biceps muscle is shown in the figure. How much tension will the biceps muscle need to apply to the forearm to maintain the arm at 90 degrees?
The forearm weighs 1.0kg with its center-of-mass as shown in the figure
a car with mass of 200 g is carring a block of 150 g climbingan incline of 30 degrees. assume the car and the attached
A 640- hollow ball 25cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 Hz .What is the torsional constant of the wire?
A car weighing 9810 Newton travels at 60 km/h moves into a circular driveway and slows down to a stop in 5 seconds. Determine how far did it travel
An object is placed 61.5 cm from a screen. Where should a converging lens of focal length 5.0 cm be placed to form an image on the screen? Find the magnification of the lens.
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785 (about 828 km/h) due north in a region where the earth's magnetic field is .98*10
Establish the speed of transverse waves on a string under a tension of 80.0 N if the string has a length of 2 m and a mass of 5 g. (b) Calculate the power required to create these waves if they have a wavelength of 16 cm and an amplitude of 4 cm.
The windows in an office building are 4.0 m by 5.0 m. On a stormy day, air is blowing at 30m/s past a window on the 53rd floor. Discover the magnitude and direction of the net force on the window. The density of air at that height is 1.23 kg/m3.
A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 9.63 m long and has a radius of 0.503 cm. How much has the cable stretched
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
A 75 kilogram shell is fired with an initial speed of 125 m/s at an angle 55o above horizontal. find how far from the launch point does the lighter fragment land
A positive charge of 4 microcoulombs is located at the center of a spherical shell of inner radius 4cm and outer radius 6cm. What is the total charge on the outer shell
A sphere completely submerged in water is tethered to the bottom with a string. What is the density of the sphere
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