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The spring constant of a toy dart gun is 5000 N/ M. To cock the gun the spring is compressed 3 cm. The 7-g dart, fired straigth upward reaches a max height of 24 m. Determine the energy dissipated by air friction during the dart's ascent. Estimate the speed of the projectile when it returns to its starting point.
The land speed record of 13.9 m/s (31 mi/h) for birds is held bythe Australian emu. An emu running due south in a straight line atthis speed slows down to a speed of 10.5 m/s in 3.3 s.Assuming that the acceleration remains the same, what is the bird'..
A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over..
A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the horizontal distance the skier travels before coming to rest if the incline also has a coefficient of kinetic friction equal to 0.216
A car of mass 1790 kg is traveling without slipping on a flat, curved road with a radius of curvature of 34 m. If the car's speed is 15 m/s, illustrate what is the frictional force between the road and the tires?
A 12.0-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.2 m/s, determine the rotational kinetic energy about its center of gravity
A spaceship and an asteroid are moving in the same direction away from Earth with speeds of 0.76c, What is the relative speed between the spaceship and the asteroid
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
A uniformly accelerated car passes three equally spaced traffic signs. The signs are separated by a distance d = 25 m. The car passes the first sign at t = 1.3 s, What is the magnitude of the acceleration of the car
When connected to a 120 V source, an electric heater is rated at 1200 W and a toaster at 6.0 102 W. what total current is delivered by an external source
Define potential difference. What is the difference between electric potential and electric potential energy? What is the unit for potential difference
A pair of slits, separated by 0.150 mm, is illuminated by light having a wavelength of ? = 631 nm. What is the path difference d for the two slits at the location y
Two blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block
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