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A 2.90 x 10 ^2 N force is pulling an 75.0-kg refrigerator across a horizontal surface. The force acts at an angle of 16.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 7.00 m.
(a) Find the work done by the pulling force.
(b) Find the work done by the kinetic frictional force.
A 34 kg child on a swing 6,9 meters long is released from rest when the swing supports make an angle of 38,9 degrees with the vertical. Neglecting friction, find out the child's speed (m/s) at the lowest position to two decimal places. Use 9,8 m/s..
A 5kg fish swimming 1 m/s swallows and absentmided 1kg fishswimming towards it at a velocity that brings both fish to a haltimmediately after lunch - what is the velocity (v) of the smallerfish before lunch ?
The coefficient of static and kinetic frictions between a 3 kg box and a desk are .4 and .3 respectively. What is the net force on the box when a 10 N horizontal force is applied to the box
A 500 gram mass is used as a pendulum bob so that itforms a pendulum that is 2.0000 metres long. How high is the pendulum bob above its originalposition?Draw a digram in which variables are clearly illustrated
Two conductors having net charges of + 10.0 µC and - 10.0 µC have a potential difference of 10.0 V between them. (a) Determine the capacitance of the system. (b) What is the potential difference between the two conductors if the charges on each ar..
q1. sunlight enters a room at an angle of 32 above the horizontal and reflects from a small mirror lying flat on the
A car approaches the top of a hill that is shaped like a vertical circle with a radius of 60m. What is the fastest speed the car can go
moves through its horizontal position at (B) and up to (C) where it stops with 2 = 109.0o, and then falls back down. Friction at the pivot is negligible. Compute the speed of the CM at (B).
Swift is a spacecraft that has a collecting area of 0.520 m2 to detect gamma-ray bursts (GRBs). find the amplitude of the magnetic field of the source
What is current flowing through the collider
We have studied diffraction from a single slit, where light is sent through a thin opening. how thick was this strand of hair
A 70.0 cm thick layer of oil floats on a 120 cm thick layer of water. What is the pressure at the bottom of the water
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