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A swimming duck paddles the water with its feet once every 1.6s, producing surface waves with this period. The duck is moving at a constant speed in a pond where the speed of the surface waves is .32 m/s and the crests ahead of the duck are spaced .12m apart.
What is the duck's speed?
How far apart are the crests behind the duck?
Sam (85 kg) takes off up a 50-m-high, 10° frictionless slope on his jet-powered skis. The skis have a thrust of 240 N. He keeps his skis tilted at 10° after becoming airborne. How far does Sam land from the base of the cliff.
two point charges are on the y axis. A 3.50 uc charge is located at y=1.1cm, and a -2.16 uc charge at y=-1.4cm. find the total electric potential at origin in volts
An athlete training for an event does 6.53 104 J of work during a workout and gives off 6.17 105 J of heat, Determine the magnitude of the change in internal energy of the athlete
A dielectric-filled parallel-plate capacitor has plate area = 30.0cm^2 , plate separation = 5.00mm and dielectric constant = 5.00. The capacitor is connected to a battery that creates a constant voltage = 10V.
A block of unknown mass is attached to a spring of spring constant 7.9 N/m and undergoes simple harmonic motion with an amplitude of 13.2 cm. Calculate the mass of the block
A young man owns a canister vacuum cleaner marked "532 W [at] 120 V" and a Volkswagen Beetle, which he wishes to clean. what is the actual power delivered to the cleaner
A 400 g mass is attached to a spring of constant k=16.0 N/m and set into oscillation with amplitude A=25.0 cm, Find the totall mechanical energy E of the oscillator
A siren has a frequency of 875 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1251 Hz. What is the speed of the observer
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. What is the total power that the battery supplies
Compute the amplitude and phase at the observation screen
A block of mass m = 331 g is dragged with a string across a rough horizontal table. The string tension is T = 3.27 N, What is the power supplied by the force of friction
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