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A person hums into the top of a well and finds that standing waves are established at frequencies of 44.0, 132.0, and 220.0 Hz. The frequency of 44.0 Hz is not necessarily the fundamental frequency. The speed of sound is 343 m/s. How deep is the well?
Two charged particles, Q1 = +4.50 nC and Q2 = -2.70 nC, are separated by 30.0 cm. What is the electrical potential energy of the pair
An athlete crosses a 29 m wide river by swimming perpendicular to the water current at a speed of 0.6 m/s relative to the water. How fast is the water flowing relative to the ground
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
A projectile launched vertically from the surface of the Moon rises to an altitude of 316 km. What was the projectile's initial speed
Which color light is the result of greater energy transition, red or blue, how much energy is needed to return an electron at ground level to the first quantum level? How can it be provided? Explain
A mass m slides without friction on a 1-dimensional track. The mass is moving from left to right with initial velocity v0. Determine the position where the mass will come to rest
Three vectors have the same magnitude of 18 units. They make angles of ?, 2 times ? and 3 times ? with respect to the x axis, where ? = 14 o. What is the y-component of their vector sum
Light from a helium-neon laser (?=633nm) is used to illuminate two narrow slits. What is the spacing (in mm) between the slits
The critical angle for light traveling in a particular optical medium and incident on an interface with air is 46.7o. Calculate the refractive index of this medium
One long wire carries current 20.0 A to the left along the x axis, A uniform electric field is applied to allow this particle to pass through this region undeflected. Calculate the required vector electric field
A small diameter, 81 cm long solenoid has 215 turns and is connected in series with a resistor and battery. The size of the magnetic field inside the solenoid is 1.118E-4 T when a voltage of 61.0 V is applied to the circuit. Calculate the resistance ..
The weight of passengers on a roller coaster increases by 51 percent as the car goes through a dip with a 39 radius of curvature.What is the car's speed at the bottom of the dip.
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