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If the person in the figure lowers his forearm with mass 1.2kg to be 15 degrees below horizontal, how much force must the biceps exert to hold the 500g ball? Note that the "insertion point" where the biceps attaches to the forearm is always 4.0 cm from the elbow joint, and assume that the person's wrist remains unbent as they lower their forearm.
a TeflonTM-filled parallel-plate capacitor having a plate area of 200 cm2 and insulation thickness of 0.0400 mm, find the maximum voltage that can be applied to this capacitor
What is the wavelength of an 102.1 FM radio station and What is the wavelength of an 1310 AM radio station
A projectile is shot from the edge of a cliff h = 105 m above ground level with an initial speed of v0 = 135 m/s at an angle of 37.0Â ° with the horizontal.
In the experiment to study polarization, the angle between the transmission axes of two polarizers is theta. Light from the incandescent light source passes through both polarizers. Calculate the value of the angle theta
By holding a magnifying glass 35cm from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.8m from the lamp
Suppose that the Earth's orbit around the Sun is perfectly circular. Employing conservation arguments, find the value of the eccentricity e of the orbit
2.85 moles of nitrogen at a temperature of 205 degree celsius are confined to a rigid whose volume is 3.50L. What is the new temperature of the gas
Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness. What is the linear speed of the blade tip
The length of a rectangualr piece of land is 100 ± 1 m and its width is 50 ± 1 m. What is the perimter of the land
The mass of Venus is 0.8140 times that of earth, and its radius is 0.950 times that of earth. Calculate the acceleration of gravity at the surface of Venus
a construction crew wants to extend a uniform rigid metal bar of length 7m and mass 400kg between two platforms which lie on the same horizonantally level. What force does the beam exert on the edge of the platform
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
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