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A dog and a sled are moving due east together with a velocity of 20m/s ( Vi= 20 m/s ). The dog (with a mass of 20 kg, or Md= 20kg) jumps off of the sled and travels 30 degrees north of east. The sled (with a mass of 5kg or Ms=5 kg) is now headed due south. What is the velocity of the dog ( Vd=?), and the sled (Vs=?) right after the dog jumps off of the sled?
question the work function of sodium is 2.23 ev. what is the longest wavelength that a photon may have if it is to
A 8.00 nF capacitor is connected to a battery and is charged to a maximum charge of 7.40 ?C through a 1.60 k? resistor. What is the voltage of the battery
1. a projectile is fired straight upward at 137 ms. how fast is it moving at the instant it reaches the top of its
For two concentric conducting rings the inner of the large ring in 12 cm and the outer radius of the smaller ring is 4 cm, Calculate the electric potential half way between the two rings 8 cm away from the center of the rings
A 33.2 m steel wire and a 25.6 m copper wire both with 1.00 mm diameters, are connected end to end and are stretched to a tension of 120 N. How long does it take the transverse wave to travel the entire length of the two wires.
you are kidnapped and put blindfolded in an elevator at the ground floor of a building. What is the approximate floor number your room is on
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 1.81 10-7 C/m2, and the plates are separated by a distance of 1.38 10-2 m. How fast is the electron moving just be..
A steel cable with total length,52 mand mass,130 kgis connected to two poles. Calculate the wavelength of the resulting wave on the cable
a base for a building column measures 18.0 in. by 18.0 in. on a side and 12 in. high. compute the cross-sectional area
a racket ball is struck in such a way that it leaves the racket with a speed of 4.89ms in the horizontal direction.
an oversized yo yo is made from two identical solid disks eachof mass M=2.00kg and radius R=10.0cm. what is the mumeric value for the system's acceleration
Calculate the frequency of the tone perceived by the person if he is moving away from the speaker with a speed of 48 m/s
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