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Three successive resonance frequencies for a certain string are 481., 518., and 555. Hz.
A. What is the fundamental frequency?
B. Which harmonic is the 555 Hz resonant frequency?
C. If the speed of transverse waves on this string is 394 m/s, find the length of the string.
A hiker determines the length of a lake by listening for the echo of her shout reflected by a cliff at the far end of the lake. Estimate the length of the lake
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 870 N person climb before the ladder begins to slip?
Your medieval history class is constructing a trebuchet, a catapult-like weapon for hurling stones at enemy castles, Find an expression for the angle that will maximize the range of a projectile launched with speed from height above level ground
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles and molecules, Where does the excess charge reside
A cell membrane is composed of lipid molecules and approximately 10.48 nm thick. If the dielectric constant of the lipid is k = 5, what is the approximate capacitance of a spherical cell that has a diameter of 10.48 mu m?
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. (a) What is the work done by the field on the electron? J (b) What is the change in..
A bird stands on a dc electric transmission line carrying 3300A (Figure 1) . The line has 2.7×10?5? resistance per meter, and the bird's feet are 3.5cm apart
If this lens is then immersed in water with a refractive index of 1.33, what will the focal lens of the lens be in this environment
A 9.10 kg board is wedged into a corner and held by a spring at a 50° angle, as the Illustrating shows. The spring has a spring constant of 196 N/m and is parallel to the floor.
Jone pulls her brother on a sled over a horizontal surface with force of 80N. The force is at an angle of 25 degree, determine the acceleration of the sled
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
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