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The pressure in each of your car tires is 2.10 multiply.gif 105 Pa. The mass of your car is 1700 kg. Assuming that each of your tires bears one-quarter of the total load, what is the contact area of each tire with the road?
A ball rolls off the top of stairway with a horizontal velocity of 2.0m/s. The steps are each 20.0cm high and 20.0cm wide. Which step will the ball hit first
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 V for 0.65 ms. find The average power supplied by the pacemaker
A parallel-plate capacitor with circular plates of radius 0.20 m is being discharged. At what rate is the electric field between the plates changing
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
The electric field intensity between two parallel plates separated by 25mm is 8000 N/C. How much work is done by the electric field in moving a -2uC charge from the negative plate to the positive plate?
large cockroaches can run as fast as 1.50 ms in short bursts. suppose you turn on the light in a cheap motel and see
The telescope at Yerkes Observatory in Wisconsin has an objective whose focal length is 19.4 m. Its eyepiece has a focal length of10.0 cm. What is the angular magnification of the telescope
An image of the moon is focused onto a screen using a converging lens of focal length f= 34.3 cm. What is the diameter of the moon's image
A single human cell encloses about 1.5m of DNA containing4.5 billion base pairs. What is the spacing between these base pairs in nanometers
Your physics TA has a far point of 0.711 m from her eyes and is able to see distant objects in focus when wearing glasses with a refractive power of ?1.47 D. Determine the distance between her glasses and eyes
A fire truck connects their hose (radius r1 = 5 cm) to a fire hydrant. The underground water lines have a radius of r2 = 15 cm, How high above the end of the hose will the water reach
if you throw a ball upward with an initial speed of 4m/s at 1.5 above the ground, find the final velocity just before touching the ground
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