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Basilisk lizards can run across the top of a water surface. With each step, a lizard first slaps its foot against the water and then pushes it down into the water rapidly enough to form an air cavity around the top of the foot. To avoid having to pull the foot back up against water drag in order to complete the step, the lizard withdraws the foot before water can flow into the air cavity. If the lizard is not to sink, the average upward impulse on the lizard during this full action of slap, downward push, and withdrawal must match the downward impulse due to the gravitational force. Suppose the mass of a basilisk lizard is 90.0 g, the mass of each foot is 3.00 g, the speed of a foot as it slaps the water is 1.50 m/s, and the time for a single step is 0.600 s.draw a freebody diagram(a) What is the magnitude of the impulse on the lizard during the slap? (Assume this impulse is directly upward.)(b) During the 0.600 s duration of a step, what is the downward impulse on the lizard due to the gravitational force?(c) Which action, the slap or the push, provides the primary support for the lizard, or are they approximately equal in their support?
A 151 kg car rounds a curve of radius 163 m at 46 m/s. The acceleration of gravity is 9.8 m/s2 . What force must the road exert on its tires to hold the car on course? find out its speed when it has moved?
question1a 27 kg chair initially at rest on a horizontal floor requires a 377 n horizontal force to set it in motion.
A student is trying to decide what to wear. His bedroom is at 17.0°C. His skin temperature is 36.0°C, Find the net energy loss from his body by radiation in 10.7 min
Illustrate what diameter has tip of the hour hand with 100 mil/hr tangential speed? If a 10 inch wide top is spinning at 300 RPM, what is the tangential speed at the widest part?
A 45 degree wedge is pushed along a table with constant acceleration A. A block of mass m slides without friction on the wedge. Find its acceleration (gravity is downwards),
A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 19.6° above the horizontal. How much work is done by the rope on the sledge
A pitcher throws a curveball that reaches the catcher in 0.55 s. What is the angular displacement of the baseball as it travels from the pitcher to the catcher
One end of a cord is fixed and a small 0.460 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, find the tangential and radial components of acceleration
An LC circuit consists of a 20 mh inductor and a 0.5 if capacitor.maximum instantaneous current is 0.1 A
The coefficient of friction between a certain brass block and a large revolving turntable is μ = 0.24. What is the period of rotation of the turntable
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