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A cork floating on a lake bobs up and down as a small wave passes. The cork completes 4.00 cycles in 4.00 s. The wave peaks are 8.1 cm apart. Discover the speed of the wave.
violet light and red light travel through air and strike a block of plastic at the same angle of incidence. the angle
for the reaction given below the frequency factor a is 8.7 x 1012 s-1 and the activation energy is 63 kjmol.nog o3g
a mass of 0.30 kg hanging from a spring with a spring constant of 86.8 nm is set into an up-and-down simple harmonic
The sound intensity level of a jet plane going down the runway as observed from a certain location is 105 dB
A slingshot will shoot a 10-g pebble 22.0 m straight up. With the same potential energy stored in the rubber band, how high can the slingshot shoot a 25- pebble
A wire of radius 1.5 mm carries a current of 2.8 A. The potential difference between points on the wire 20 m apart is 4.7V. determine the electric field in the wire
A small welding machine uses a voltage source of 120 V at 60 Hz. When the source is operating, it requires 1200 W of power, and the power factor is .75. FInd the rms current in the machine while operating
A 4.0 kg mass is connected by a light cord to a 3.0kg mass ona smooth surface. The pulley rotates about a frictionlessaxle and has a moment of inertia of 0.5kg m^2 and a radius of.30m. Assuming that the cord does not slip on the pulley,
The car collides and becomes stuck to a 5000kg truck travelling west at along South Street at the intersection of South Street and Murdoch Drive. Illustrate what is the final velocity of the vehicles after the collision if the truck was travelling..
A tank of 0.5 m3 volume contains compressed air. A valve is opened and air escapes with a velocity of 220 m/s through an opening of 100 mm2 area. Find the rate of change of density of the air in the tank at this moment
two uniformly charged insulating rods are bent in a semicircular shape with radius r 14.3 cm. if they are positioned
a speedboat starts from rest and accelerates at 2.01 ms2 for 7.35 s. at the end of this time the boat continues for an
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