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A 1350 kg roller coaster car starts from rest at a height H = 21.0 m (see figure) above the bottom of a 15.0 m diameter loop. If friction is negligible, determine the downward force of the rails on the car when the upside-down car is at the top of the loop.
In the Atwood machine shown below, m1 = 2.00 kg and m2 = 5.50 kg, How far will m1 descend below its initial level and Find the velocity of m1 after 1.80 s
A car of mass 1,250 kg is lowered onto a junk pile at the end of the cable of a large crane. If the car is accelerating downward at 0.19 m/s2
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds. What is the acceleration of the tortoise
Find out the radial acceleration of the ball during its circular motion.
A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.00 cm thick flat piece of crown glass and back to air again. At what angles do the two colors emerge from the glass
A string that is fixed at both ends has a length of 1.61 m. When the string vibrates at a frequency of 92.8 Hz, What is the fundamental frequency of the string
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 445 Hz when the train is approaching him and 418 Hz when the train is receding from him. Using these frequencies, h..
A worker pushed a 22 kg block 8.1 m along a level floor at constant speed with a force directed 39° below the horizontal. find the increase in thermal energy of the block-floor system
In 0.744 s, a 8.16-kg block is pulled through a distance of 4.47 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
A capacitor consisting of two plates separated by a distance d of 4.25 x 10^-3, with an area A of 8.15 x 10^-4 m^2, What is the numerical value of the energy for the capacitor
A photon is emitted when a hydrogen atom undergoes a transitionfrom the n = 5 state to the n = 3 state. Calculate the energy (in electron volts) of the emitted photon
Having taken a nap under a tree only 20 m from the finish line, Rabbit wakes up to find Turtle 19.5 m beyond him, grinding along at 1/4 m/s. If the bewildered hare can accelerate at 8 m/s2 up to his top speed of 17 m/s (38 mi/h) and sustain that s..
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