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A sound wave has a frequency of 655 Hz in air and a wavelength of 0.49 m. What is the temperature of the air? Assume the velocity of sound at 0?C is 332 m/s. Answer in units of ?C.
An elevator passenger is on her way down to the ground floor. Her mass is 50 kg, What are the rate and direction of her acceleration
A motorboat whose speed in still water is 2.60 m/s, must aim upstream at an angle of 28.5 degrees in order to travel directly across the stream. what is the resultant speed of the boat with respect to the shore
A potter's wheel with rotational inertia 6.92kg⋅m2 is rotating freely at 19.3 rpm. The potter drops a lump of clay onto the wheel, where it sticks 48.0 cm from the rotation axis. With the clay on the wheel, the wheel's rotation rate is 17.4 rpm. ..
define the magnitude of the external field. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interva..
A 71kg pole-vaulter falls from rest from a height of 4.6m onto a foam-rubber pad. The pole-vaulter comes to rest 0.4s after landing on the pad.
A light beam strikes a piece of glass at a 72.00^\circincident angle. The beam contains two wavelengths, 450.0{\rm nm}and 700.0 {\rm nm},for which the index of refraction of the glass is 1.4820 and1.4742, respectively
A village maintains a large tank with an open top, containing water for emergencies. Calculate the friction force exerted by the nozzle on the stopper
Calculate the potential energy of a system of two small spheres, one carrying a charge of 2.00 µC and the other a charge of -4.00 µC, with their centers separated by a distance of 0.210 m
A large tree trunk is floating in the sea. The density of the sea water is 1020 kg/m3, What fraction of the trunk's volume is above the surface of the water
A rock is thrown vertically upward from ground level at time t = 0. At t = 1.9 s it passes the top of a tall tower, What is the height of the tower
8 lights are connected in parallel to a 110 V source by two long leads of total resistance 1.6 ohms. what fraction of the total power is wasted in the leads
A spring hanging from the ceiling has an unstretched length of 80cm. What is the amplitude of the resulting oscillation
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