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A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.5 m/s2; after 4.1 second he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant velocity of 68.6 meter per second overtakes and passes the entering car. The entering car maintains its acceleration. Find how much time is required for the entering car to catch up with the other car?
A proton in the upper atmosphere moves at 9.8×105m/s , perpendicular to Earth's magnetic field, Find the curvature radius of the proton's trajectory
two speakers 10m apart and facing each other emit identical in phase sound waves. if you stand between the speakers 2m
As a tennis ball is struck, it departs from the racket horizontally by a speed of 29.0 m/s. The ball hits the court at a horizontal distance of 20.3 m from the racket. How far above the court is the tennis ball when it leaves the racket?
Consider point P on the viewing screen of a double-slit experiment. This point is 75% of the way from the center of the third bright fringe to the center of the fourth bright fringe. If the wavelength of the light is 600 nm, what is the extra distanc..
An artillery shell is fired with the initial velocity of 300 m/s at 54.7° above the horizontal. To clear an avalanche, it explodes on the mountainside 55.0 s after firing. What is the x and y components of the shell where it explodes, relative to its..
An object is placed 107.6 mm to the left of a diverging lens. Where is the image located when the lens has a focal point of 58.8 mm
A 70 kg mountain climber dangling in a crevasse stretches a 50-m-long, 1.0-cm-diameter rope by 8.0 cm. What is Young's modulus for the rope
a singly ionized nickel atom has an overall charge of 1e where e 1.602 x 10-19 c and a mass m 9.80 x 10-26 kg. it
A package of mass m is released from rest at a warehouse loading dock and slides down a 3.0-m-highfrictionless chute to a waiting truck. To what height does the package of mass m rebound
Suppose your lab partner has a height L of 170 cm (5 ft, 7 in) and a weight w of 680 N (153 lb). find the distance of your lab partner's center of gravity from the left end of the board
a scientist claims to have developed a new method of isolating individual particles which will enable him to detect
Starting from rest several toy cars roll down ramps with differing lengths and angles. Rank them by their speed to the bottom ofthe ramp from the slowest to fastest. Car A goes down a 10 mramp inclined at 15 degrees, car B goes down a 10 m ramp incli..
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