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A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 2.80 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block comes to rest, how far has the spring been compressed?
A circular loop of wire 0.2 m in diameter is placed with its normal at an angle of 30° to the direction of a uniform 0.14 T magnetic field. What emf appears in the loop
A 0.19-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 20 N. Find the tension in the stick
An ideal transformer has 890 turns in its primary coil and 150 turns in its secondary coil. What is the output voltage of the secondary coil
A 65- person stands on a scale in a moving elevator while holding a 5.0 mass suspended from a massless spring with spring constant 1.10. What is the reading of the scale on which the person stands
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.00 m. What is the magnitude of its average acceleration during the contact with the floor
A racecar travelling at a constant speed turns in a circle with a radius of 10 m. what is the racecar's speed
Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to common vertical direction.
Four vectors A,B,C ,D and are shown (not to scale). Vector A has magnitude 23.0 and acts at an angle of 14.7 degrees with respect to the positive x axis. find the magnitude and direction of the resultant vector R
A toy top has a string wrapped around its body. The string has a length of 64cm and is wrapped around the top at a place where its radius is 2.0cm. What is the final angular velocity in rpm of the top when the string is completely unwound
A set of jumpers cables used to start a car from another car's batterty is connected to the terminals of both batteries. What is the force per unit length on the cables
A straight ladder is leaning against the wall of a house. Theladder has rails 4.40 m long,joined by rungs 4.500 m long. What should be the thicknessof the flat rock
Certain sharks can detect an electric field as weak as 1.1 mu V/m . To grasp how weak this field is, how far apart would the plates have to be
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