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An airplane releases a ball as it flies parallel to the ground at a height of 145 m as shown in the figure. If the ball lands on the ground exactly 145 m from the release point, calculate the speed v of the plane. Neglect any effects due to air resistance, and use g = 9.81 m/s2 for the acceleration due to gravity.
A bullet is moving at a speed of 367 m/s when it embeds into a lump of moist clay. The bullet penetrates for a distance of 0.0621 m. Determine the acceleration of the bullet while moving into the clay. (Assume a uniform acceleration.)
A ball is attached to a center post with a string that is 0.587 m long. The ball is moving in a circle on a frictionless table top at a speed of 1.43 m/s with a radius of 0.587 m. What is the centripetal acceleration of the ball?
Consider a two lens system with focal length +10 and +5 separated with 12 cm. locate the image of an object 50 cm from the +10 cm lens. What is its magnification? Is the image real or virtual?
A polypropylene (pp) utility cart is absorbing RF radiation from a wifi laptop sitting on a metal stand over the cart. The polypropylene (pp) utility cart is now warm around its perimeter
A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. What is the acceleration of the rising balloon
A 40 gram ball of clay traveling east at 3 m/s collides and sticks together with a 60 gram ball of clay traveling north at 4.50 m/s. Obtain the speed of the resulting ball of clay
a projectile is fired with an initial speed of 64.8m/s at an angle of 44.3 degrees above th horizontal on a long flat firing range. determine the direction of the projectile
A heat engine operates between a high-temperature reservoir at670K and a low-temperature reservoir at 320 K. What is the magnitude of the net change in entropy as a result of this cycle
It is proposed that future space stations create an artificial gravity by rotating. Find what rotation period will provide gravity
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 62° above the horizontal. How high above the ground is the highest point that the skateboarder reaches
consider two ZAMS stars: 09 and B0. The effective temperature of the 09 star is 34,500 k. Assuming a hydrogen density of 10^8 m^-3, and Alpha = 3.1 x 10^-19 m^3 s^-1, estimate the Stromgren radius of the stars in pc and AU
If 650-nm light falls on a slit 0.0525mm wide, What is the angular width of the central diffraction peak
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