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A 7.0 kg box is raised from rest a distance of 3.0 m by a vertical force of 110 N.
A. What is the total work done on the block when the block slides 1.4 m (measured along the incline)?
B. What is the speed of the block after it has slid 2.0 m if it starts from rest?
C. What is its speed after 2.0 m if it starts with an initial speed of 1.7 m/s?
A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10.00 radius of curvature. What is the car's speed at the bottom of dip? What is the car's speed at the bottom of the dip?
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
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Use gauss law to find the electric field in the space surrounding an infinite line of the charge with a uniform charge density
A constant force, F = (4.55, ?3.79, 2.10) N,acts on an object of mass 17.4 kg, What is the total work done by this force
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A projectile is fired at an upward angle of 45° from the top of a 212 m cliff with a speed of 161 m/s. What would be its speed while it strikes the ground below.
A microscope is used to examine a sample of bacteria that are spread on glass. determine the shortest distance between two bacteria
Two nonconservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. Illustrate what is the change in the car's kinetic energy, ΔKE = KEf - KE0, fro..
A 210g ball is dropped from a height of 1.8m and bounces on a hard floor. How high does the ball rebound
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