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A harmonic wave in a wire has amplitude 7.07 mm, wavelength 2.61 m, and frequency 254 Hz. What is the propagation speed of the wave?
The wire has linear mass density of 30 g/m. Determine the wire%u2019s tension.
A plane move through the air. This results in the air under thewing moving at speed v=50 m/s. what is the lift exerted on the plane in Newtons
The mean distance between the Earth and the Sun is 1.50×1011 m. The average intensity of solar radiation incident on the upper atmosphere of the Earth is 1390 W/m2, determine the total power radiated by the Sun
A member of an aircraft maintence crew wears protective earplugs that reduce the sound intensity by a factor of 350. What sound intensity level would the crew member experience
A 46kg box is being pushed a distance of 7 m across the floor by the force vector P whose magnitude is 144N. The force vector P is parallel to the displacement of the box.
Water is lifted out of a well 22.0m deep by a motor rated at 1.40hp .Assuming efficiency 90% , how many kilograms of water can be lifted in 1 min
For the third circuit, consisting of a single battery and two light bulbs in parallel, how does the brightness of the bulbs compare to the first circuit, What is the current through each bulb
A block rides on a piston that is moving vertically with simple harmonic motion. If the SHM has period 4.7 s, at what amplitude of motion will the block and piston separate
When the starter motor on a car is engaged, there is a 330A current in the wires between the battery and the motor, What minimum diameter can the wires have if the voltage drop along the wires is to be less than 0.45V
The graph of two cars that collide shows that they intersect at a point 5.5m on a distance/time graph. The first car has a velocity of 0.39m/s. what does the steepness of the slope indicate
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
a man is standing near a gate and a flag pole. The gate is 15 ft from the pole. If the pole is h=35 ft tall, how far is the man from the gate
What must the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction.
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