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An object is 28.0 cm from the center of a silvered spherical glass Christmas tree ornament 6.50 cm in diameter. What are the position and magnification of its image? (Use the correct sign conventions.) position _______________cm from the surface image is inside or in front of the ball? magnification = _____________
A solid marble, a solid disk and a hoop have the same mass (M = 1.4 kg) and the same radius. What is the minimum height that the marble, disk and hoop can be released so that all three will safely make it around the loop-the loop
A 4 g bullet has a speed of 250 m/s and embeds itself into a450 g block. How far does the block slide after the collision before coming to rest
A 80 bike racer climbs a 1500 -long section of road that has a slope of 4.3 degrees. By how much does his gravitational potential energy change during this climb
Your sofa won't fit through the door of your new sixth-floor apartment, so you use a 1.08kW motor to lift the 84.4kg sofa 15.6m from the street. How much time does the lift take
What is the magnitude of the vertical component of its velocity as it strikes the ground.
A 330 g air track on a horizontal air trek is attached to a string that goes over a pulley with a moment of inertia of 5.00x10^-6 kgxm^2 and a radius of 1.35 cm. Find acceleration ofthe hanging mass
Two particles each have a mass of 7.1 x 10-4 kg. One has a charge of +6.7 x 10-6 C, and the other has a charge of -6.7 x 10-6 C. How fast is each particle moving when the separation between them is one-half its initial value
A proton moves perpendicular to a uniform magnetic field at a speed of 1.90 107 m/s and experiences an acceleration of 2.90 1013 m/s2 in the positive x-direction when its velocity is in the positive z-direction. Determine the magnitude and direction ..
The leg and cast weigh 290 -N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w2 weighs 120 N. Determine the weight w1 and angle α needed in order that there is no force exerted on the hip joint by the le..
A 1000- kg car collides with a 1200- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car (in km/h)
Four identical charged particles (q= +10.0µC) are located on the corners of a rectangle. find the direction of the total electric force exerted on the charge at the lower left corner by the other 3 charges
A 305 turn solenoid has a radius of 7.00 cm and a length of 24.0 cm. Find the inductance of the solenoid
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