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1. A book with a mass of 2.0 kg is held in equilibrium on a boardwith a slope of 60 degrees by a horizontal force. What is the normal Force?
2. An ice skater moving at 10.0 m/s in 1.0 X 102m on asmooth ice. What is the coefficient of friction Between the ice andthe skates?
A woman at an airport is towing her 14.0-kg suitcase at constant speed by pulling on a strap at an angle, What is the magnitude of the normal force that the ground exerts on the suitcase
Sound propagating through air at 30oC passes through avertical cold front into air that is 4.0oC. If the soundhas a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary?
A bottle has a mass of 35.00 g when empty and 98.44 g when filled with water. When filled with another fluid, the mass is 88.78 g. What is the specific gravity of this other fluid
two disks are mounted on frictionless bearings on the same axle and can be brought together so that they couple and
A string of mass 0.0003kg/m and 0.5m long is vibrating 200 cycles per second. What must be the tension? What hanging mass would generate this tension? I got 12N for tension. Is this correct? And how would you solve for hanging mass.
A piece of radium has an activity of 18 mCi. What is the mass of the radium
An electron is accelerated through a potential difference of 10 Megavolts. By what factor has the mass of the electron increased
Blood is a viscous fluid. If due to plaque, the cross-sectional area of an artery is reduced by a factor 6 over a segment with a length of 0.5 cm, approximately by what factor would the pressure difference between both ends of this segment need to be..
Suppose a modern power plant has a 1.00-GW electric power output at 500 V. It is stepped up to a transmission voltage of 750 kV in a series of five identical transformers. What is the current in the high voltage delivery lines
An object is placed 13 cm in front of a concave mirror whose focallength is 17 cm. The object is 3.7 cm tall. Determine(a) the location of the image, taking a real imageas a positive value and a virtual image as a negative value.
The output signal intensity of the transducer is 40 Watt / cm2. The echo returning from a reflector deep inside the patient is 0.025 Watt / cm2. How many dB is the ratio of output signal to echo?
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0894 s, estimate the vertical components of the launch velocity
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