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the 500N weight is supported by two cables, the cable forces being F1 and F2. knowing that the resultant of F1 and F2 is a force of magnitude 500N acting in Y-direction, determine F1 and F2.
Radio station WCCO in Minneapolis broadcasts at a frequency of 830 kHz. At a point some distance from the transmitter, Calculate the electric-field amplitude
find out the magnitude of an acceleration
A large tank is divided into two parts by a partition. The first part contains 5 kg of refrigrtant-134a at 80oC, 900 kPa. Determine the work and heat transfer during this process
Radiotelescopes are designed to observe 21-cmwaves emitted by atomic hydrogen gas. Estimate the distance to this galaxy
The exhaust fan on a typical kitchen stove pulls 600 CFM (cubic feet per minute) through the filter. how many cubic meters per second does this fan pull
you were directed to measure the angle of reflection when the ray was incident on either side of the normal to the
A dentist's drill starts from rest. After 2.70 s of constant angular acceleration it turns at a rate of 3.0 104 rev/min, Find the drill's angular acceleration
The left ventricle of the heart accelerates blood from rest to a velocity of + 24.4 cm/s. If the displacement of the blood during the acceleration is + 2.18 cm, determine its acceleration (in cm/s2).
a block mass 15.92kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.11m/s^2. what is the net force acting on the mass
An airplane flying at a distance of 45 km from a radio transmitter receives a signal of intensity 50 µW/m2. The transmitter radiates uniformly over a hemisphere. What is the amplitude of the electric component of the signal at the airplane? What is t..
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
A laser beam travels from air (n=1.002) into glass (n=1.522)and then into gelatin. The incident ray makes a 58 angle with the normal as it enters the glass and a 36.4 angle with the normal in the gelatin. Determine the angle of the refracted ray in..
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