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Try to form an image of an incandescent bulb on your 'screen' by changing the distance between the lens and the bulb. Start with the lens about 18" away from the filament. Once you have a focused image on your screen, move the lens closer to the bulb and move the screen to find the image once again. What is the behavior of the image distance? What happens if you position the lens so that the bulb is near the focal point? Bonus: Can you confirm and quantify your observations using the thin lens equation?
The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. How much time does the beetle have to react in this case
A sailboat race course consists of four legs, defined by the displacement vectors , , , and , as the drawing indicates. find the distance of the fourth leg and the angle
The block on the left hass a mass of 0.40 kg and is initially moving to the right at 2.4 m/s toward a second block of mass 0.50 kg that is initially at rest. What is the velocity of the first block after the collision
I just got this wrong for the third time. A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure.
A 0.410-kg blue bead slides on a frictionless, curved wire, Find the maximum height the green bead rises
Assume a billiard ball is a solid sphere. Its radius is 3 cm and mass is 500 grams. The coefficient of static friction between the ball and the surface is .70. a) Where should you hit the ball so that it experiences pure rolling motion without the..
An electron of mass 9.1E-31 kg is released from rest at a distance of 7.1 E-10 m from a fixed electron. Find the maximum velocity (in meters/second) of the moving electron after release
a science-fair radio uses a homemade capacitor made of two 35cm x 35cm sheets of aluminum foil separated by a
A loop of radius R in the x - y plane is centered at the origin and carries a current I. What is the force on the wire
What is the magnitude of the net torque exerted on the branch by the children? Suppose that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed by the branch and the trunk.
A spring-loaded pellet gun is designed to fire 2.40 g projectiles horizontally at a speed of47.8 m/s. What maximum force is required to load the gun
A singly ionized helium atom (He+) has only one electron in orbit about the nucleus. What is the radius of the ion
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