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Scarlet has taken a summer job at a water park. In her act sheglides up a 2.0 m high frictionless ramp then sails over a 5 m widecage filled with hungry sharks. What is the minimum speed at which she can begin her ascent of the ramp in order to avoid landing in the cage with the sharks? (Hint: how fast must she be going at thetop of the ramp?)
A) 8 m/sB) 10 m/sC) 12 m/sD) 14 m/sE) 16 m/s
Two round rods, one steel and the other copper, are joined end to end. Each rod is 0.795m long and 1.85cm in diameter. The combination is subjected to a tensile force with magnitude 3950N.
A boy with a mass of 60 kg is hanging from a spring with a spring constant of 160 N/m. With what frequency does the boy bounce up and down
A speeding motorist zooms through at 75km/h, without noticing a police car by the roadside. Calculate the speed of the police car when it catches the speeding motorist
Two identical clocks are synchronized. One is then put in orbitdirected eastward around the Earth while the other remains on the Earth. Which clock runs slower? When the moving clock returns tothe Earth, are the two still synchronized?
An empty storage tank has a volume of 140 ft3. What is the buoyant force exerted on it by the air
A convex lens of focal length 10 cm is placed 40 cm in front of a concave lens of focal length 25 cm.A small object is placed 20 cm in front of the convex lens calculate the location of the final image relative to the second lens.
A father racing his son has three-fifths the kinetic energy of the son, who has half the mass of the father. What is the original speed of the son
A mouse of mass m jumps on the outside edge of a freely turning ceiling fan of rotational inertia I and radius R. By what ratio does the angular velocity change
A rifle with a mass of 2.5 kg fires a bullet with a mass of 5.5 g (0.0055 kg). The bullet moves with a muzzle velocity of 330 m/s after the rifle is fired. What is the momentum of the bullet after the rifle is fired
A golf ball of mass 0.045 kg is hit off the tee at a speed of 49 m/s. The golf club was in contact with the ball for 4.7 x 10-3 s. Find the magnitude of the impulse imparted to the golf ball
A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee, determine the amount of heat required and the amount of power required
The question needed to answer this one is "An 800. kg race car has a coefficient of static friction of 0.98 with the road. What is the minimum radius of the turn
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