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1. If the speed of sound is 343 m/s, find the lowest frequency sound that will form a standing wave in a 1.8 meter long rod that is clamped at its center?
2. If the speed of sound is 343 m/s, obtain the lowest frequency sound that will form a standing wave in a 2 meter long tube with a node at once end and antinodes at the other?
Tarzan spies a 35 kg chimpanzee in severe danger, so he swings to the rescue. What are the frequency and amplitude (in degrees) of Tarzan's swing
A cannonball is launched from the ground at an angle of 45o above the horizontal and a speed of 45 m/s. With no air resistance, find with what speed ball will land on the ground
A defibrillator consists of a 17.0-µF capacitor that is charged to 8.5 kV. What is the average power delivered to the tissues
How many 112 W lightbulbs can you use in a 100 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, that means that the potential difference across each lightbulb is 100 V.)
A 270 ball and a 520 ball are linked by a 50.0-cm-long massless, rigid rod. The structure rotates about its center of mass at 120 rpm. What is its rotational kinetic energy.
Sand from a stationary hopper falls onto a moving conveyor belt at the rate of dm/dt = 5 kg/s as shown. The conveyor belt is supported by frictionless rollers, Find the force of friction exerted by the belt on the sand
A cannonball (20kg) is shot from a cannon(200kg) with a velocity of 20m/s. what is the backwards velocity of the cannon
A block has an initial speed V(o) > 0 on a linear trajectory on the surface with friction coefficient u and air resistance (F = cv^2). Derive an equation that will represent the velocity (V) as a function of the position of the block (x). So V(x).
Estimate the capacitance C of a human being relative to infinity. About how much energy is released when the person touches something and a spark jumps?
a 1.0m long 1.0 mm diameter copper wire carries a current of 50.0 a to the east. suppose we create a magnetic field
A flat circular coil with 110 turns, a radius of 3.80 × 10-2 m, and a resistance of 0.340 ? is exposed to an external magnetic field that is directed perpendicular to the plane of the coil, Find the induced current in the coil
Four identical charges (+1.5 mC each) are brought from infinity and fixed to a straight line. Each charge is 0.51 meter from the next. Find the electric potential energy of this group
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