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Suppose you have a spring-loaded projectile launcher. Aim it straight upwards, compress the spring 1 cm, then launch a projectile from rest. You find that it rises 20 cm above the end of the spring. If you repeat this experiment, but instead compress the spring by 2 cm, should you expect the projectile to rise more than, less than, or exactly 40 cm above the end of the spring? Explain, assuming the total mechanical energy of the spring + projectile system is conserved.
A viewing window in the Atlanta aquarium is 50 inches wide and 50 inches high. what is the outward force on the window
When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released. how many miles can the car travel on one gallon of gas
A 0.958 kg block of copper initially at 30.0oC, is dropped into an insulated container with a large quantity of liquid nitrogen. What is the mass of the nitrogen that boils away
An unstretched elastic spring has a mass M = 3.75 kg and a length of l0 = 0.525 m. What is the elastic potential energy of the spring
White light is shone on a very thin layer of alcohol (n = 1.36), and above the alcohol layer, interference maxima for two wavelengths (and no other in between) are seen: one violet wavelength of 410 nm, and one red wavelength of 670 nm. What is the t..
During 30 seconds of use, 250 C of charge flow s through a microwave oven. Compute the size of the electric current
A rotating wheel requires 3.09-s to rotate through 37.0 revolutions. calculate the constant angular acceleration of the wheel
A concave mirror (R = 56.0 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 38.0 cm from the mirror, and a small flashlight shines light through the slide and onto the mirror. The setup is similar to that ..
If the coefficient of volume expansion of mercury is 18x10(^-5) (K^-1), what is the coefficient of volume expansion in the glass?
q1. a swimming pool has dimensions 28.0 m 7.0 m and a flat bottom. the pool is filled to a depth of 1.90 m with fresh
A very short solenoid contains N = 20 circular loops of wire. what is the magnetic field in the center of the solenoid
A solar eclipse is projected through a pin- hole of diameter 0.247mmand strikes a screen 3.12 m away. What is the radius of the first diffraction minimum
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