State the relationship between velocity, wavelength, and frequency of a wave
Velocity = frequency × wavelength.
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The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
a. 0.025 kg b. 0.049 kg c. 0.051 kg d. 0.081 kg e. 0.037 kg
An Atwood machine consists of an object of mass of 3.5 kg connected by a light string to an object of mass of 6.0 kg over a frictionless pulley with a moment of inertia of 0.0352 kg ? m2 and a radius of 12.5 cm
If the system is released from rest, what is the speed of the objects after they have moved through 1.25 m if the string does not slip on the pulley? A) 2.0 m/s B) 2.3 m/s C) 4.0 m/s D) 5.0 m/s E) 6.0 m/s
One way to expand yields of crops is to increase the area under cultivation. This has few impacts other than an expansion of crop supply
What will be an ideal response?
Two equal-magnitude forces are exerted to a door at the doorknob. The first force is exerted perpendicular to the door, and the second force is exerted at 30° to the plane of the door. Which force exerts the greater torque about the door hinge?
A) the first force (exerted perpendicular to the door) B) the second force (exerted at an angle) C) Both forces exert equal non-zero torques. D) Both forces exert zero torque.