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A 31.0cm focal length converging lens is 24.0 cm behind adiverging lens. Parallel light strikes the diverging lens. After passing through the converging lens, the light isagain parallel. What is the focal length of the diverging lens?
A new fabric is made to help athletes stay cool. It has a conductivity constant of 898.785 J/(s m K). what is the power of the materials thermal conductivity
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. After how many seconds does the ball reach its highest point
A charge of -3.0 nC is at the origin and a second charge of 15.0 nC is at x = 7.00 m. Find the magnitude and direction of the electric field
A machine part rotates at an angular speed of 0.40 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.76 rad/s2
A solid has a volume of 8cm3. When weighed on a spring scale calibrated in grams, the scale indicates 20g. What does the scale indicate if the object is weighed as immersed in a liquid of density 2g/cm3.
Consider a balloon filled with helium gas at room temperature (T = 289 K) and atmospheric pressure. Calculate the average de Broglie wavelength of the helium atoms
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.9g of copper, What diameter will you choose for your wire
On an icy (nearly frictionless) street a 600 kg car traveling straight east at 5 m/s collides with a 1000 kg car traveling straight north at 3 m/s. what is the final speed of the second car
A 3600 kg block falls vertically through 5.6 m and then collides with a 640 kg pile, driving it 4.9 cm into bedrock. find the magnitude of the average force on the pile
From then on, the wheel turns through an angle of 431 rad as it coasts to a stop at constant angular deceleration. Illustrate a t what time does the wheel stop?
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position, what was his angular velocity when he left the diving board
An observer, whose eyes are 1.77 m above the ground, is standing 28.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with treetop makes an angle of 22.0° above the horizontal. How..
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