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Bernie B is walking directly toward the center of a vertical mirror M. How close to the mirror will he be when Sarah S is just able to see him? The vertical mirror has a width d = 3.0 m. With the center of the mirror to be the origin of a coordinate system, Bernie is walking along the y-axis toward the mirror. Sarah is at a point (4.5, -3) m away from the mirror.
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 9.0 m/s right before entering the wood. The mass of the nail is 0.060 kg, how far into the wood does the nail go
A pet-store supply truck moves at 25m/s north along a highway. Inside, a dog moves at 1.85m/s at an angle of 35° east of north. What is the velocity of the dog relative to road.
A proton with a speed of 2.0 x 106 m/s is shot into aregion between two plates that are separated by a distance of 0.15m. As the drawing shows, a magnetic field exists between the plates, and it is perpendicular to the velocity of the proton.
A man stands on a platform that is rotating (without friction) with an angular speed of 1.0 rev/s; his arms are outstretched, What is the resulting angular speed of the platform
A spring is compressed by .02 m ad launches a block up an incline (ignore friction). what is the maximum distance will it travel
An 8 g of ice cube at %u2013 120 C is put into a thermos flask containing 100 cm3 of tea at 850C. What is the drop in temperature for tea
The speed of sound in Helium is 1010 m/s.Suppose you use a tuning fork with a frequency of 522 HZ. What would be the separation of the 2 maxima in a standing wave apparatus if the tube were filled with helium gas?
The two angled ropes used to support the crate in the figure below an withstand a maximum tension of 1600 before they break What is the largest mass the ropes can support
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
A cardinal (Richmondena cardinalis) of mass 4.30×10-2 and a baseball of mass 0.14 have the equal kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
Two ice skaters push off of one another. Paul has a mass of 65 kg and an acceleration of 5 m/s2 south. Tom has a mass of 75 kg, what is his acceleration
A meterstick (L = 1 m) has a mass of m = 0.133 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string right after the right string is cut
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