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Compare the motion of two objects before a collision with their motion after the collision. You should be able to find a quantity, which will remain unchanged in a collision. Be sure to justify your reasoning.
An object is placed to the left of a convex lens and on the optical axis. find the magnification of the image formed by the lense
The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density of course, become less with altitude. But suppose the density of air were a constant 1.2 kg/m^3. Calculate where the top of the atmosphere would be.
you are designing a delivery ramp for crates containing exercise equipment. the crates of weight 1510 n will move with
A certain lightbulb has a tungsten filament with a resistance of 17.7 ? when at 20.0°C and 135 ? when hot. Find the temperature of the hot filament
q1.an green hoop with mass mh 2.4 kg and radius rh 0.14 m hangs from a string that goes over a blue solid disk pulley
A 4kg cart is initially moving at 3m/s on a frictionless track. It then hits an incline and stops 2m later. what is the net work done on the cart
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. What is the speed of the electron when it exits the hole in the plate
Consult to explore a model for solving this problem. A person pushes on a 55-kg refrigerator with a horizontal force of -280 N; What is the magnitude of the largest pushing force
A bomb mass 7.2 kg goes off and splits into 3 pieces. The first piece has a mass of 1.1 kg and velocity of 9.5 m/s. What is the magnitude and direction of the velocity of the third piece
A jogger accelerates from rest to 2.12 m/s in 3.34 s. A car accelerates from 24.1 to 38.6 m/s also in 3.34 s. Find the magnitude of the acceleration of the jogger
The energy imparted to an electron as it moves through a potential of magnitude V is eV, where e is the charge on an electron. How do you find theoretical value for the slope of your line
A plane flying horizontally at a speed of 50.0 m/s and at an elevation of 160 m drops a package. How far apart will the two packages land on the ground (ignore air resistance)
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