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A 50 kg sled is subject to a net force of 20 N pushing in the direction of the sled motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. At this point the sled is released as it starts down a 10 degree incline. However thesnow is not very deep and the sled stop after having moved an additional 35 m. What is the work done by friction while the sled is on the incline?
How much must this spring be stretched to store.
A converging lens has a focal length of f = 22 cm. If an object is placed 42 cm from the lens, where will the image be formed
The mass of a robot is 3780 kg. This robot weighs 3540 N more on planet A than it does on planet B. What is the difference MA - MB in the masses of these planets
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 20000 V. find the electron speed just before the electron strikes the screen
An isolated hollow spherical conducting shell has a charge of 10^-6 C. In some manner, a point charge of 3*10^-6 C is placed inside the cavity of the shell,find the charge on the inner surface of the shell
A small space telescope at the end of a tether line of length L moves at linear speed v about a central space station. What will be the linear speed of the telescope
Consider a circuit. The three resistors are identical with R1 = R2 = R3= 160 ?, and the battery voltage is 50 V. What is the current through resistor R2?
What is the decibel level required for human perception
How far away does the ball strike the ground?
The proper length of one spaceship is five times that of another. The two spaceships are traveling in teh same direction, determine the speed of the other faster spaceship
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 30km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out the electric potential difference.
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