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Assumed that for the couple in the figure below, you were told that the girl's mass was equal to that of the boy. The boy has a velocity of v = +0.40 m/s. What would be the girl's velocity in this case? -----m/s
A wheel of diameter of 68.0 cm slows down uniformly from 8.40 m/sto rest over a distance of 115 m. What is the total number of revolutions the wheel rotates in coming to rest
A source traveling to the right at a speed of 11.30 m/s emits a sound wave at a frequency of 104.0 Hz. The sound wave bounces off of a reflector, which is traveling to the left at a speed of 4.95 m/s. What is the frequency of the reflected sound w..
Suppose that a block is pulled at a constant velocity with a constant force in the presence of sliding friction. What is the net force on the block while it is moving at a constant velocity from point a to point b
The temperature of the surface of the sun is 6000K and its radius is 696,000Km. How much energy is the sun radiating into space per second
An AC source operating at 60 Hz with a maximum voltage of169 V is connected in series with aresistor (R = 1.4 k) and acapacitor (C = 2.5 µF). What is the maximum value of the current in the circuit? What are the maximum values of the potential diff..
A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
An object is 15 cm in front of a diverging lens that has a focal length of -8.7 cm. How far in front of the lens should the object be placed
A uniform beam of length 5.4 m and mass 12 kg supports a28 kg mass. The cable is at an angle of 58.4 with the wall and the beam is attached to the wall by pivoting pin at an angle of 58.8 by the wall. Discover the tension in the cable. The accelerati..
A mass is at rest on a spring in a liquid with density = 1500kg/m^3. The spring has a force constant of 200N/m, determine the density of the mass
A 527-kg hot-air balloon takes off from rest at the surface of the earth. The non-conservative wind and lift forces take the balloon up, doing 377000 J of work on the balloon in the process.At what height above the surface of the earth does the ba..
Water is flowing in an open channel that is 2.00 m wide. The water surface is 3.00 m above the bottom of the channel. What volume of water is flowing in the channel
The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find out the final speed of puck A also Find out the final speed of puck B. m/s
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