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A fox locates rodents under the snow by the slight sounds they make. The fox then leaps straight into the air and burrows its nose into the snow to catch its meal. If a fox jumps up to a height of 73 cm, calculate the speed at which the fox leaves the snow and the amount of time the fox is in the air. Ignore air resistance.
A meteoroid, heading straight for Earth, has a speed of 14.8 km/s relative to the center of Earth as it crosses our moon's orbit, a distance of 3.84 × 108 m from the earth's center. What is the meteroid's speed as it hits the earth? You can neglect t..
A 1.90-cm-high object is situated 19.2 cm in front of a concave mirror that has a radius of curvature of 11.1 cm. Calculate the location and the height of the image
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the too this formed 10.0 cm behind the mirror. Determine the mirror's radius of curvature.
A Carnot engine performs work at the rate of 480 kW as using 640 kcal of heat per second. If the temperature of the heat source is 540°C, at what temperature is the waste heat exhausted.
Two runners A and B start from the opposite end of a 150 m track and at the same instant begin running from rest toward each other with constant accelerations of 0.2 m/s2 and 0.1 m/s2 , respectively. When and where will the two runners meet?
An oscillating LC circuit consisting of a 3.0 nF capacitor anda 3.6 mH coil has a maximum voltage of 4.7 V. What is the maximum charge on the capacitor
a long solenoid that has 910 turns uniformly distributed over a length of 0.390 m produces a magnetic field of
A 42kg child decides to make a raft out of empty 1.0 L soda bottles and duct tape. what is the minimum number of bottles needed in order to keep the child dry
Write a complete set of equations from Kirchhoffs for the circuit -
a luggage handler pulls a suitcase of mass 19.4kg up a ramp inclined at an angle 29.0 above the horizontal by a force
A 2-m-long, 4-cm-diameter shaft rotates inside an equally long 4.02-cm-diameter cylinder. If SAE-10W oil at 25-C fills the gap between the concentric cylinders, determine the torque and horsepower needed to rotate the shaft at 1200 rpm.
Argon is a monatomic gas whose atomic mass is 39.9 u. The temperature of 9 grams of argon is raised by 75 K under conditions of constant pressure. Assuming that argon is an ideal gas, evaluate how much heat is required? J
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