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Question1
To measure static friction coefficient between a 4.34 kg block and a vertical wall, the setup shown in drawing is used. A spring (spring constant = 510 N/m) is attach to the block. Someone pushes on the end of the spring in direction perpendicular to the wall until the block does not slip downward. If spring in such a setup is compacted by 0.0636 m, what is coefficient of static friction?
Question2
A small airplane flies with a speed relative to ground (ground speed) of 205.0 km/h in a direction 16.0 o to the east of north. If the plane is headed due north and the deviation from that direction is due to a cross wind blowing from west to east, what is speed of the wind (in km/h)?
A person scuffing her feet on a wool rug on a dry day accumulates a net charge of -42 µC. How many excess electrons does she get, and by how much does her mass increase?
The largest stable nucleus has a nucleon number of 209, and the smallest has a nucleon number of 1. what is the ratio (largest/smallest) of the surface areas of these spheres
what are the magnitude and direction of its acceleration. find out the magnitude of the charge on the moving particle.
Find the position of the object to acquire real, magnified image, inverted, and virtual, upright image.
A tennis player receives a shot with the ball ( 0.0600kg) traveling horizontally at 50.0 m/s, what is the impulse delivered to the ball by the racket
A ball is at the top of a ramp that is 4.5 m above a table. If the ball rolls without friction, how fast is it going at the bottom of the ramp
An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the?
Two objects attract each other gravitationally with a force of 3.0×10-10 N when they are 0.60 m apart. Their total mass is 4.0 kg. Determine their individual masses.
calculate the fraction of which is submerged when the cylinder floats in alcohol. Fraction of Vwood submerged.
What will be the equilibrium temperature when a 223 g block of copper at 258 C is placed in the 178 g aluminium calorimeter cup containing 874 g of water at 13.2 C.
A fire truck has a siren with that generates a sound with a frequency of 6686 Hz. what frequency will you observe
A system consisting entirely of electrons and protons has a net charge of 1.64×10?15C, How many electrons and protons are in this system
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