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1. From the previous problem, find an equation for the speed of the ball at the determined location, assuming the ball starts rolling from rest
2. In the previous problem, the coefficient of kinetic friction is μk, between block and surface. How much is the spring compressed?
3. In the previous problem, 10% of the kinetic energy is lost during the collision between block and spring. How much is the spring compressed?
4. Two people are at the gym having a debate about how much energy is required to bench press a certain weight for one repetition. One person says that the energy required depends on how fast the weight is lifted. The other person says that it doesn't matter. Using an energy analysis determine which person is correct.
5. A solid ball has a mass of 50 grams and a volume of 20 cm3. What is the density?
6. In the previous problem use θ = 15°. What is the maximum force pushing down the incline so that the block doesn't slip? What is the maximum force pushing up the incline so that the block doesn't slip?
A mass of 9.20 kilogram is pulled along a horizontal surface by a constant force of F=84.0 Newton directed 30.0o above the horizontal. find what is the work done only by force
1 how much force would you need to exert in order to stop a gun recoil if the recoil lasts for 0.2 s? the gun has a
A dipole lies on the y axis and consists of an electron at y1 = 0.70nm and a proton at y2 = -0.70nm . Find the electric field midway between the two charges.
Three successive resonant frequencies in an organ pipe are 865, 1211, and 1557 Hz. What is the fundamental frequency
Bob can see the drai at the bottom center of a water filled pol (n=1.33) that is 3.6 m wide by light emerging 18 degrees above the horizontal
suppose a star is at a distance of 20 parsec from Earth. What is its apparent magnitude m? If the star has the same luminosity as Sun, what is its absolute magnitude M?
A movie projector is equipped with a 0.6-meter focal length lens that is positioned 0.605 meters from the film. How many times larger is the image than the object
suppose the wind speed in a hurricane is 107 mph. a find the difference in air pressure pa outside a home and inside a
A balloon with a radius of 14.00cm and an electric charge of 3.75 × 10-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. Establish the magnitude of the electric force exerted by this electric field on ..
A beam of red light, whose frequency is 4.30*10^14, passes through a piece of dense flint glass (n=2.13) in 25 ps (picoseconds). Find the thickness of the glass
Two loudspeakers are placed on a wall 3.00 m apart. A listener stands 3.00 m from the wall directly in front of one of the speakers. A single oscillator is driving the speakers at a frequency of 600 Hz. What is the phase dissimilarity between the two..
The impact of the head of a golf club on a golf ball can be approximately regarded as an elastic collison. what must the speed of the club be before impact
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