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Q1. An osprey's call is a distinct whistle at 2200 Hz. An osprey calls whereas diving at you, to drive you away from her nest. You hear call at 2220 Hz. How fast is the osprey approaching?
Q2. Two plane mirrors make an angle of 58°. A light ray enters the system and is reflected once off each mirror. During what angle is the ray turned?
Q3. 29g of copper pellets are removed from the 300 degrees C oven and immediately dropped into 90 mL of water at 19 degrees C in an insulated cup. What will the new water temperature be?
What is the ratio of the amplitude of the damped oscillation
As part of a safety investigation, two 1400 cars travelling at 18 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
What is the maximum speed with which a 1200- car can round a turn of radius 71 on a flat road if coefficient of static friction between tires and road is 0.45.
A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again.
In a car lift, the output plunger has a radius of 9cm. the weight of the plunger and the car is 21600N. What is the gauge pressure of the hydraulic oil used in the operating lift.
What is an average acceleration of the dragonfly
What is an initial and final energy of the system energy? It takes .005 seconds for the bullet to embed itself into the block. What is an average impact force it experience.
Write down the expression that shows the pressure
On an airplane's takeoff, the combined action of the air around the engines and wings of an airplane exerts an 8020-N force on the plane, focussed upward at the angle of 55.0° above the horizontal. The plane rises with constant velocity in the vertic..
At one instant a bicyclist is 28.0 m due east of a park's flagpole, going due south with a speed of 11.0 m/s. Then 24.0 s later, the cyclist is 26.0 m due north of the flagpole, going due east with a speed of 11.0 m/s. For the cyclist in this 24.0 s ..
Find the radius of the largest water drop
A 18.0 kg block is dragged over a rough, horizontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizontal. The block is displaced 10.8 m, and the coefficient of kinetic friction is 0.149.
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