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The force applied to the cart in Question A by springscale F1 is still 12.25 N. The cart now moves toward the right withan acceleration also toward the right of 2.5 m/s2. What are the magnitude and direction of the frictional force?
A string, 0.2 m long, vibrating in the n = 4 harmonic, excites an open pipe, 0.89 m long, into second overtone resonance. The speed of sound in air is 345 m/s. The velocity of transverse waves in the string, in SI units, is closest to:
In figure (a), a 4.2 kg dog stands on a 15 kg flatboat at distance D = 6.1 m from the shore. It walks 2.1 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
A physical pendulum is made by drilling a hole through a uniform wooden disk of radius R a distance (alpha)*R from the disk's center. What must alpha be to miniumze the disk's period of oscillation
A person is nearsighted and can clearly focus on objects that are no farther than 2.6 m away from her eyes. What is the focal length of the borrowed glasses
To stretch a spring 2.00 cm from its unstretched length, 15.0 J of work must be done, What is the force constant of this spring
A target glider, whose mass m2 is 370 g, is at rest on an air track, a distance d = 53 cm from the end of the track. How much more time elapses before the gliders collide again
The primary windings of a transformer, which has an 65% efficiency, are connected to 110 V ac. Calculate the current through the primary windings of the transformer
The length of a simple pendulum is 0.72 m and the mass of the particle (the "bob") at the end of the cable is 0.27 kg. What is the angular frequency of the motion
A charge q at the origin is at the back corner of an imaginary cube of edge length a. What is the electric flux through the shaded region? Use direct integration
A charge q at the origin is at the back corner of an imaginary cube of edge length a. What is the electric flux through the shaded region (the plane at y=a)? (the picture that goes along with it shows a cube, and the side that is shaded is the vertic..
An AC generator is to have a maximum output of 340 V. Find the maximum current induced in the coil
A 60 kg man is ice-skating due north with a velocity of 6.0 m/s when he collides with a 36 kg child. What is the direction of the child's velocity just before the collision
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