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Two conductors made of the same material are connected across the same potential difference. Conductor A has twice the diameter and twice the length of conductor B. What is the ratio of the power delivered to A and to the power delivered to B?show your work also.
The moon is observed using a telescope that has an objective lens with a focal length of 3.0 m and an eyepiece with a focal length of 7.5 cm. What is the angular diameter of the moon
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
Block A has mass 1.20 kg and Block B has mass 2.9 kg. They are forced together, compressing spring S between them how much potential energy was stored in the compressed spring
a projectile is fired with an initial velocity of 15 m/s at an angle of 37 degrees. At t=2 s, find the vertical and horizontal positions of the projectile
Assume that you wish to fabricate a uniform wire out of .60 g of copper. Assume the wire has a resistance R = 0.300 and all of the copper is used.
On an air track, a 400.5g glider moving to the right at 2.00m/s collides elastically with a 500.5g glider moving in the opposite direction at 3.00m/s. find the velocity of the glider after the collision
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
A 17.0-g piece of Styrofoam carries a net charge of -0.75 µC and is suspended in equilibrium above the center of a large, compute the charge per unit area on the plastic sheet
A croquet mallet delivers an impulse of 8.07 N s to a 0.54- kg croquet ball initially at rest. What is the speed of the ball immediately after being struck
A 50 newton horizontal force pushes a 10kg mass sitting on a horizontal surface. What is the acceleration of the mass
A car decelerates uniformly and comes to a stop after 10s. The car's velocity was 50 km/h. What was the car's deceleration
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