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A car makes a trip due north for three-fourths of the time and duesouth one-fourth of the time. The average northward velocity has amagnitude of 24 m/s, and the averagesouthward velocity has a magnitude of 23 m/s. What is the average velocity (magnitudeand direction) for the entire trip?
A singly charged positive ion has a mass of 2.53 10-26 kg. After being accelerated through a potential difference of 238 V, Calculate the radius of the path of the ion in the field
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. Estimate the mass of the crate
A plane flies at 234 mi/hr (air speed) in the direction northeast; there is a wind of 51 mi/hr (ground speed) in the direction southeast. How far will the plane fly in 94 minutes
A 29.0-g object moving to the right at 19.0 cm/s overtakes and collides elastically with a 9.0-g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision
A 50.0 kg snowboarder has an initial velocity of 2.00 m/s at the top of a 26o incline. How far from the bottom of the hill does she stop
Three point charges, +q, +Q and -Q, are placed at the corners of anequilateral triangle and no other charged objects are nearby. What is the direction of the net force on charge +qdue to the other two charges?
In diving to a depth of 750 m, a seal also moves 460 m due east of his starting point. What is the magnitude of the seal's displacement
the potential difference between two parallel plates is 590 v. an alpha particle with mass of 6.64 10-27 kg and charge
The clapper is a small, 1.8 kg mass attached to one end of a slender rod that has length L and negligible mass. The other end of the rod is attached to the inside of the bell
A two-slit experiment with slits separated by 3.5 10-4 m produces a second-order maximum at an angle of 0.0670°. Find the wavelength of the light used in this experiment
A spherical ball of charge has radius R and total charge Q. The electric field strength inside the ball(r?R) is E(r)=Emax(r4/R4). Find an expression for the volume charge density ?(r) inside the ball as a function of r
a 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs. by how much will the box compress the weaker spring
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