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A body in free fall reaches the ground in 5 s.
a ) From what height in meters was it dropped ?
b ) What is its initial velocity ?
C ) How far did it fall in the last second of its descent ?
A car of mass 1800 travelling at 60.7 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. Use = 9.80 throughout the problem.
How to find out potential energy
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 479 m/s. What is the temperature (in Kelvin) of the environment
An electric dipole consists of charges +e and -e separated by 0.76 nm. It is in an electric field of strength 2.50 10^4 N/C, What is the torque on the dipole when it is perpendicular to the field
Assuming the sun to radiate like an idea thermal source at a tempterature of 6000 K, What fraction of the total solar radiation
Pressure Variations and Ocean Exploration, How do the pressure variations with depth affect the ability to explore the ocean? How does it affect scuba diving
Starting from rest, a 4.10-kg block slides 2.6 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is ?k = 0.436, Determine the work done by normal force
Two lenses that are 35 cm apart are used to form an image. Lens 1 is diverging and has a focal length of f1= -7.0 cm; Use a ray diagram to find the approximate location of the final image
She pumps the handle up and down, slowly lifting the car. What is the force exerted on the small piston during each downward stroke?
An 8.56-kg block slides with an initial speed of 1.80 m/s down a ramp inclined at an angle of 27.4° with the horizontal. compute the distance the block slides before coming to rest
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
A large, thin plastic disk wth diameter D=3.0 meters carries a uniformlydistributed charge of Q= -3.0 x 10^-5 C, Calculate the magnitude q of the charge on the left circular face of the foil
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