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A 3.1-cm-tall object is 47 cm in front of a converging lens that has a 11.8 cm focal length. Calculate the image position and height. position cm height cm.
An electron and a proton are each placed at rest in a uniform electric field of magnitude 564 N/C. Calculate the speed of each particle 44.4 ns after being released.
A 8 kg box slides d = 4.2m down the frictionless ramp, after that collides with a spring whose spring constant is 250 N/m. angle is 30 degrees.
A 70kg man walks out on a 10kg beam that rests on, but is not attached to, two supports. When beam just starts to tip, what is the force exerted on the beam by the right support.
The 3.3 kg piece of wood slides on the surface. The curved sides are perfectly smooth, but the rough horizontal bottom is 35 m long and has the kinetic friction coefficient of 0.24 with the wood. The piece of wood starts from rest 6.0 m above the rou..
A 4.47 m long pole stands vertically in a lake having a depth of 2.22 m. while the sun is 62.6 degrees above the horizon, find the length of the pole's shadow on the bottom of the lake.
How many 104 W lightbulbs can you use in a 102 V circuit without tripping a 17 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each lightbulb is 102 V.)
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
What is sign and magnitude of charge
A plane leaves the airport in Galisto and flies 159km 68 degrees east of north and after that changes direction to fly 242km at 48 degrees south of east, after which it makes an immediate emergency landing in a pasture.
Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m, respectively. If q = -40 pC and Q = +30 pC, define the net flux through a spherical surface (radius = 1.0 m) centered on the origin.
After the collision, the 2.00-kg object has a velocity 5.00 m/s to the west. How much kinetic energy was lost throughout the collision.
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